Partially Palindromic Compositions
Jia Huang
Department of Mathematics and Statistics
University of Nebraska at Kearney
Kearney, NE 68849
USA
Abstract:
We generalize recent work of Andrews, Just, and Simay on modular
palindromic compositions and anti-palindromic compositions by viewing all
compositions partially (modular) palindromic or anti-palindromic. More
precisely, we enumerate compositions by the extent to which they are
(modular) palindromic or anti-palindromic. We obtain various closed
formulas from generating functions and provide bijective proofs for
many of them. We recover some known results of Andrews, Just, and Simay
and discover new connections with numerous sequences in the On-Line
Encyclopedia of Integer Sequences (OEIS).
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(Concerned with sequences
A000073
A000332
A000579
A000581
A001590
A001752
A001769
A001780
A001786
A001870
A002620
A002624
A006367
A008346
A008805
A025192
A028495
A036799
A052534
A052547
A060098
A060099
A060100
A060101
A062200
A078008
A081038
A094967
A096338
A105422
A105423
A113435
A158454
A161680
A208354
A212804
A299336
A324969.)
Received March 11 2023; revised versions received April 4 2023; April 5 2023.
Published in Journal of Integer Sequences,
April 7 2023.
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