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Search: id:A058710
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| A058710 |
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Triangle T(n,k) giving number of loopless matroids of rank k on n labeled points (n >= 0, 0<=k<=n). |
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+0
7
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| 1, 0, 1, 0, 1, 1, 0, 1, 4, 1, 0, 1, 14, 11, 1, 0, 1, 51, 106, 26, 1, 0, 1, 202, 1232, 642, 57, 1, 0, 1, 876, 22172, 28367, 3592, 120, 1, 0, 1, 4139, 803583, 8274374, 991829, 19903, 247, 1
(list; table; graph; listen)
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OFFSET
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0,9
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LINKS
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W. M. B. Dukes, Tables of matroids
W. M. B. Dukes, Counting and Probability in Matroid Theory, Ph.D. Thesis, Trinity College, Dublin, 2000.
Index entries for sequences related to matroids
W. M. B. Dukes, On the number of matroids on a finite set
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EXAMPLE
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1; 0,1; 0,1,1; 0,1,4,1; 0,1,14,11,1; ...
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CROSSREFS
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Cf. A058711. Row sums give A058712. Diagonals give A058692, A058715.
Adjacent sequences: A058707 A058708 A058709 this_sequence A058711 A058712 A058713
Sequence in context: A085852 A123125 A055105 this_sequence A124539 A096501 A062862
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KEYWORD
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nonn,tabl,nice
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AUTHOR
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njas, Dec 31 2000
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EXTENSIONS
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Corrected T(5,2) from 31 to 51. - Ralf Stephan, Nov 29 2004
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