A058722 Number of simple matroids of rank 4 on n labeled points.

1, 16, 337, 18700, 7642631

Offset

4,2

Links

Table of n, a(n) for n=4..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=4 of A058720.

Sequence in context: A240344 A068368 A013993 * A318013 A320399 A173906

Adjacent sequences: A058719 A058720 A058721 * A058723 A058724 A058725

Keyword

nonn,more

Author

N. J. A. Sloane, Dec 31 2000

Status

approved