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Search: id:A063841
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| A063841 |
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Table T(n,k) giving number of n-multigraphs on k nodes (n >= 0, k >= 1) read by antidiagonals. |
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8
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| 1, 1, 1, 1, 2, 1, 1, 3, 4, 1, 1, 4, 10, 11, 1, 1, 5, 20, 66, 34, 1, 1, 6, 35, 276, 792, 156, 1, 1, 7, 56, 900, 10688, 25506, 1044, 1, 1, 8, 84, 2451, 90005, 1601952, 2302938, 12346, 1, 1, 9, 120, 5831, 533358, 43571400, 892341888, 591901884, 274668, 1
(list; table; graph; listen)
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OFFSET
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0,5
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LINKS
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Harald Fripertinger, The cycle type of the induced action on 2-subsets
Vladeta Jovovic, Formulae for the number T(n,k) of n-multigraphs on k nodes
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EXAMPLE
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Table begins
1 1 1 1 ...
1 2 3 4 ...
1 4 10 20 ...
1 11 66 276 ...
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CROSSREFS
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Rows and columns give A000088, A004102, A053400, A053420, A053421, A063842, A063843.
Sequence in context: A122175 A073165 A137153 this_sequence A137596 A111669 A124834
Adjacent sequences: A063838 A063839 A063840 this_sequence A063842 A063843 A063844
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KEYWORD
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nonn,nice,tabl
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Aug 25 2001
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EXTENSIONS
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More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Sep 03 2001
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