%I #7 May 10 2023 22:38:49
%S 1,0,1,22,3935,1497568,883538845,725601878962,792072162839065,
%T 1110677779035583912,1947266694667001733208,4175906998639267840682727,
%U 10757238370963150080155796720,32785728540392233760236496299048,116709223477757580428169966318431329
%N Number of nonisomorphic unordered triples of fixed-point-free endofunctions on an n-set.
%C Isomorphism is up to permutation of the elements of the n-set.
%H Andrew Howroyd, <a href="/A362901/b362901.txt">Table of n, a(n) for n = 0..50</a>
%Y Column k=3 of A362899.
%Y Cf. A362900.
%K nonn
%O 0,4
%A _Andrew Howroyd_, May 10 2023