A362651 Number of nonisomorphic multisets of involutions on an n-set with n involutions.

1, 1, 3, 7, 74, 1532, 478902, 1561933881, 74069769621942, 44786847731274624558, 454923769422460614413179958, 75365529411732671264995255795387368, 250450659464630320300793563353757730632329596, 16712244262184960007363857016489055045260380508520606142

Offset: 0

Author

Andrew Howroyd, May 01 2023

Keywords

• nonn

Comments

Isomorphism is up to permutation of the elements of the n-set.

Links

• Andrew Howroyd, Table of n, a(n) for n = 0..40

Crossrefs

Main diagonal of A362648.

Cf. A362382, A362647.