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

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