A362901 Number of nonisomorphic unordered triples of fixed-point-free endofunctions on an n-set.

1, 0, 1, 22, 3935, 1497568, 883538845, 725601878962, 792072162839065, 1110677779035583912, 1947266694667001733208, 4175906998639267840682727, 10757238370963150080155796720, 32785728540392233760236496299048, 116709223477757580428169966318431329

Offset: 0

Author

Andrew Howroyd, May 10 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..50

Crossrefs

Column k=3 of A362899.

Cf. A362900.