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A058718 Number of nonisomorphic loopless matroids on n unlabeled points. 3
1, 1, 2, 4, 9, 21, 60, 208, 1418, 381448 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
W. M. B. Dukes, Tables of matroids.
W. M. B. Dukes, Counting and Probability in Matroid Theory, Ph.D. Thesis, Trinity College, Dublin, 2000.
W. M. B. Dukes, The number of matroids on a finite set, arXiv:math/0411557 [math.CO], 2004.
W. M. B. Dukes, On the number of matroids on a finite set, Séminaire Lotharingien de Combinatoire 51 (2004), Article B51g.
Dillon Mayhew and Gordon F. Royle, Matroids with nine elements, arXiv:math/0702316 [math.CO], 2007.
Dillon Mayhew and Gordon F. Royle, Matroids with nine elements, J. Combin. Theory Ser. B 98(2) (2008), 415-431.
Gordon Royle and Dillon Mayhew, 9-element matroids.
CROSSREFS
Row sums of A058716.
Sequence in context: A048194 A148075 A351364 * A148076 A217976 A156801
KEYWORD
nonn,nice,more
AUTHOR
N. J. A. Sloane, Dec 31 2000
EXTENSIONS
a(9) from Gordon Royle, Dec 23 2006
STATUS
approved

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Last modified April 22 08:09 EDT 2024. Contains 371893 sequences. (Running on oeis4.)