The Number of Designated Parts in Compositions with Restricted Parts
Mengmeng Liu and Andrew Yezhou Wang
School of Mathematical Sciences
University of Electronic Science and Technology of China
Chengdu 611731
P. R. China
Abstract:
In this paper, we study the number of designated parts in three types
of compositions with restricted parts. We find new combinatorial
interpretations of some known sequences, and establish two identities
concerning these known sequences.
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(Concerned with sequences
A006367
A010049
A029907
A102702
A239342.)
Received July 7 2019; revised version received December 30 2019.
Published in Journal of Integer Sequences,
December 31 2019.
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