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A362651
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Number of nonisomorphic multisets of involutions on an n-set with n involutions.
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3
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1, 1, 3, 7, 74, 1532, 478902, 1561933881, 74069769621942, 44786847731274624558, 454923769422460614413179958, 75365529411732671264995255795387368, 250450659464630320300793563353757730632329596, 16712244262184960007363857016489055045260380508520606142
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OFFSET
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0,3
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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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