Journal of Integer Sequences

This is the home page for the electronic Journal of Integer Sequences, ISSN 1530-7638.

The journal is devoted to papers dealing with integer sequences and related topics. All submissions should be sent to the editor-in-chief,

Jeffrey O. Shallit
School of Computer Science
University of Waterloo
Waterloo, Ontario N2L 3G1

Editorial board:

Submission instructions

If you don't follow these instructions, your paper might be immediately rejected.

1. Electronic submission is required. Please submit your paper in LaTeX format. No other formats are currently acceptable. Do NOT send pdf or dvi files. We regret that we cannot handle submissions in Microsoft Word or Word Perfect formats. Submissions must be in English.

2. If there are accompanying style files or diagrams, please be sure to include them. Diagrams should be prepared in .eps format, not pdf, jpg, png, or other formats. If there are multiple files, please send them as a tar or zip file. You can use this BibTeX style file if you are preparing your bibliography in BibTeX.

3. The subject line of your email message should read "Submission to the Journal of Integer Sequences". (Any other header is in danger of being discarded by a spam filter.) This is also true for any revision.

4. Be sure that your submission latex'es properly with no errors or important warning messages. Check the log files before submission. If there are errors or important warning messages (such as multiply defined labels), your paper risks immediate rejection without possibility of resubmission. Run your paper through a spell-checker before submission. Papers with spelling errors risk being rejected immediately with no possibility for resubmission. If you are not experienced with latex, please read our style guide before preparing your file.

5. Authors may want to suggest two or three names of possible referees. (Do not suggest members of the editorial board.)

6. Please do not submit additional papers while your current paper is under review.

7. Any submission claiming to solve a significant open problem (e.g., Goldbach's conjecture; Beal's conjecture; infinitely many twin primes; Riemann hypothesis; 3x+1 problem) or a major result such as Fermat's last theorem must be preceded by a physical letter (not e-mail) written and signed by a Ph. D. mathematician, other than one of the authors, with an appointment at a university, on the letterhead of that university, and sent through ordinary postal mail, stating that he/she has read the paper and certifies its correctness.


Note to submitters from China: e-mail from many servers in China, such as, is typically marked as spam. Please try submitting from a different e-mail address, such as

We do not read e-mail every day. If you do not receive an acknowledgment from us within fourteen days, then we have not received your paper. Please do not send any inquiries until at least 14 days have passed. In addition, during certain periods (e.g., start of school terms, August, late December to early January) there will likely be no processing of papers.

JIS is completely free for both authors and readers. There are no article processing charges, submission charges, or page charges. Members of the editorial board, including the editor-in-chief, receive no remuneration. The Journal is published with all-volunteer labor.

Therefore, publishing a paper in JIS requires a higher standard of manuscript preparation than many other journals, which have a large editorial staff to fix problems. We ask that you read our style guide with care and make a real effort to make your paper conform. This also means that if you are not a native English speaker, you will want to find a native English speaker to proofread your paper.

By submitting you agree to follow the guidelines in our LaTeX style guide in the final version of your paper:

These guidelines include an agreement to provide a paper in grammatically correct English. If you are not a native speaker, you may need to find someone who is one to proofread your paper. The style guide (above) also suggests paid services you can hire to proofread your paper.

Papers should be original, of high quality, and should not have been published in any other journal. (However, publication on web sites or e-print servers is explicitly allowed.) All submissions will be refereed. The standards are those of any serious mathematical journal. Papers should be worthy of being reviewed by Mathematical Reviews. Unlike a traditional journal, there are no page limits. Authors should feel free to include as much expository material as they like, provided it adds to the paper and makes it easier to understand. Feel free to submit accompanying documents and files, such as computer programs, Maple or Mathematica worksheets, tables, and so forth. All will be published and accompany your paper.


We do our best to get referee reports back to submitters within two months. However, in practice, you will often not get a report this quickly. There are delays at both ends (asking a referee; reading and evaluating the report) and sometimes we have to ask 5 or 6 people before we can find someone willing to read your paper. If we cannot find someone willing to read your submission after asking for several months, it is likely that your paper is not really suitable for our Journal, and we will let you know this.

Copyright Statement

Authors agree that by publishing in the Journal of Integer Sequences, they have created an original paper which shall not be published in the same, or substantially the same, form in any other journal without acknowledging prior publication in the Journal.

By publishing a paper in the Journal, authors grant the Journal a perpetual, royalty-free license to publish this paper in any collection of Journal papers in any form. Authors retain the copyright of their submitted papers. Authors may, of course, submit their paper to the Arxiv or any other preprint archive.

Why we don't currently belong to the DOAJ

Because their requirements are many and sometimes silly; because their decisions are arbitrary and take too long; because they do not reply to messages pointing out false claims in their decisions.

Perhaps in the future, if they reform themselves, we'll join. The DOAJ is, in principle, a good idea.

Google search for the Journal:

Current Volumes

Backlog information for Volume 20, 2017, as submitted to the AMS:

Median time from submission to final decision: 139 days
Median time from final acceptance to publication: 8 days

These are median times only and are not guarantees.

See also the On-Line Encyclopedia of Integer Sequences