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 A362765 Number of nonisomorphic 3-sets of permutations of an n-set. 3
 0, 0, 6, 116, 2494, 87984, 4250015, 271412031, 21965480315, 2195837248568, 265649147125826, 38249422194113490, 6463715127098722285, 1266831272477388372744, 285028258253204630333567, 72965650731125156284328720, 21086743012582217859035501699 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Isomorphism is up to permutation of the elements of the n-set. LINKS Andrew Howroyd, Table of n, a(n) for n = 1..50 EXAMPLE The a(3)=6 sets with permutations shown in cycle notation are: {(1)(2)(3), (1)(23), (12)(3)}, {(1)(2)(3), (1)(23), (123)}, {(1)(2)(3), (123), (132)}, {(1)(23), (12)(3), (123)}, {(1)(23), (12)(3), (13)(2)}, {(1)(23), (123), (132)}. CROSSREFS Column k=3 of A362763. Cf. A362646, A362764. Sequence in context: A052465 A229582 A113015 * A024275 A287652 A259064 Adjacent sequences: A362762 A362763 A362764 * A362766 A362767 A362768 KEYWORD nonn AUTHOR Andrew Howroyd, May 03 2023 STATUS approved

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Last modified September 7 20:21 EDT 2024. Contains 375749 sequences. (Running on oeis4.)