Some Identities For Palindromic Compositions
Yu-hong Guo
School of Mathematics and Statistics
Hexi University
Zhangye, Gansu, 734000
P. R. China
Abstract:
This paper considers self-inverse or palindromic compositions of
positive integers into parts ≤ 3. First we obtain two classes of such
compositions that are enumerated by the Fibonacci numbers. Then we
provide combinatorial identities between palindromic compositions and
compositions into 1's and 2's, compositions into odd parts, and
compositions into parts greater than 1.
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(Concerned with sequence
A055389.)
Received October 11 2017; revised versions received October 14 2017; October 24 2017; May
12 2018; June 9 2018; June 11 2018.
Published in Journal of Integer Sequences, August 22 2018.
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