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%I #6 May 10 2023 22:39:17
%S 1,1,13,638,118949,42483668,23524514635,18477841853059,
%T 19526400231564564,26714255854638149145,45938634690184528585855,
%U 96990967579564469350287613,246664446832722382952639028437,743740463651636548809953508690270,2623456914417867939801667337352637825
%N Number of nonisomorphic unordered triples of endofunctions on an n-set.
%C Isomorphism is up to permutation of the elements of the n-set.
%H Andrew Howroyd, <a href="/A362898/b362898.txt">Table of n, a(n) for n = 0..50</a>
%Y Column k=3 of A362897.
%Y Cf. A001372, A054745.
%K nonn
%O 0,3
%A _Andrew Howroyd_, May 10 2023