Two Properties of Catalan-Larcombe-French Numbers
Xiao-Juan Ji
School of Mathematical Sciences
Soochow University
Suzhou
Jiangsu 215006
P. R. China
Zhi-Hong Sun
School of Mathematical Sciences
Huaiyin Normal University
Huaian
Jiangsu 223001
P. R. China
Abstract:
Let (Pn)
be the Catalan-Larcombe-French numbers. The
numbers Pn
occur in the theory of elliptic integrals, and
are related to the arithmetic-geometric-mean. In this paper we
investigate the properties of the
related sequence Sn =
Pn/2n instead,
since (Sn)
is an Apéry-like sequence.
We prove a congruence and an inequality for
Pn.
Full version: pdf,
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(Concerned with sequence
A053175.)
Received November 21 2015; revised versions received November 24 2015; February 23 2016.
Published in Journal of Integer Sequences, April 6 2016.
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