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A362901
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Number of nonisomorphic unordered triples of fixed-point-free endofunctions on an n-set.
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2
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1, 0, 1, 22, 3935, 1497568, 883538845, 725601878962, 792072162839065, 1110677779035583912, 1947266694667001733208, 4175906998639267840682727, 10757238370963150080155796720, 32785728540392233760236496299048, 116709223477757580428169966318431329
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OFFSET
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0,4
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COMMENTS
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Isomorphism is up to permutation of the elements of the n-set.
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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