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Search: id:A000663
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| A000663 |
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Relations on an infinite set.
(Formerly M1932 N0763)
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+0
1
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| 1, 2, 9, 37, 183, 933, 5314, 32043, 207212, 1415934, 10200289, 77018442, 607474564, 4987909231, 42519634303, 375395726926
(list; graph; listen)
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OFFSET
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0,2
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
W. Oberschelp, Kombinatorische Anzahlbestimmungen in Relationen, Math. Ann., 174 (1967), 53-78.
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CROSSREFS
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Sequence in context: A150991 A150992 A151310 this_sequence A122673 A139102 A041515
Adjacent sequences: A000660 A000661 A000662 this_sequence A000664 A000665 A000666
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KEYWORD
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nonn,nice,more
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Jan 10 2000
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