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A058687
Number of matroids of rank 3 on n labeled points.
1
1, 15, 171, 2053, 33442, 1022217
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OFFSET
3,2
LINKS
Table of n, a(n) for n=3..8.
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.
Index entries for sequences related to matroids
CROSSREFS
Column k=3 of
A058669
.
Sequence in context:
A206600
A016172
A016225
*
A206594
A354403
A152586
Adjacent sequences:
A058684
A058685
A058686
*
A058688
A058689
A058690
KEYWORD
nonn
AUTHOR
N. J. A. Sloane
, Dec 30 2000
STATUS
approved
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Last modified June 5 10:02 EDT 2024. Contains 373105 sequences. (Running on oeis4.)