

A327151


Number of orbits of the direct square of the alternating group A_n^2 where A_n acts by conjugation, such that both permutations in a representative pair are of the same conjugacy class in A_n.


1



1, 1, 1, 3, 8, 23, 82, 452, 2369, 18356, 143308, 1396222, 13000455, 152886068
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OFFSET

0,4


LINKS

Table of n, a(n) for n=0..13.


EXAMPLE

For n = 3, representatives of the a(3) = 3 orbits are: (e,e), ((123),(123)), ((132),(132)), where e is the identity.


CROSSREFS

Cf. A110143, A327014, A327150.
Sequence in context: A148779 A148780 A148781 * A317362 A309114 A065083
Adjacent sequences: A327148 A327149 A327150 * A327152 A327153 A327154


KEYWORD

nonn,more


AUTHOR

Derek Lim, Aug 23 2019


STATUS

approved



