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Abstract
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We derive the generating function (g.f.) of the number of colored circular palindromic compositions
of
with
parts in terms of the
g.f. of an input sequence
that determines how many different colors each part of the composition can have. As
a result, we get the g.f. of the number of all colored circular palindromic compositions of
.
Using the latter formula and the g.f. of the number of colored circular compositions,
we may easily derive the g.f. of the number of all colored dihedral compositions of
.
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Keywords
circular palindrome, dihedral composition, generating
function
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Mathematical Subject Classification 2010
Primary: 05A10, 05A15, 11B39
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Milestones
Received: 5 March 2020
Revised: 23 June 2020
Accepted: 12 July 2020
Published: 7 August 2020
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