

A163861


Number of different 5th power (quintic) mappings of a finite set of n elements into itself.


3



1, 1, 4, 21, 148, 1281, 12942, 150955, 2042272, 31912425, 567737326
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OFFSET

0,3


COMMENTS

The same as A102687 (square composition), A163859 (cubic composition), A163860 (4th power composition), here a(n) is the number of different mappings g that admit at least one mapping f as the 5th order root (g=fofofofof) in terms of the composition.


LINKS

Table of n, a(n) for n=0..10.


CROSSREFS

Cf. A102687, A163859, A163860.
Column k=5 of A247026.
Sequence in context: A308337 A307525 A327872 * A247054 A006153 A286286
Adjacent sequences: A163858 A163859 A163860 * A163862 A163863 A163864


KEYWORD

more,nonn


AUTHOR

Carlos Alves, Aug 05 2009


EXTENSIONS

a(0) from Alois P. Heinz, Sep 09 2014
a(8)a(10) from Bert Dobbelaere, Jan 24 2019


STATUS

approved



