A058722 - OEIS

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A058722

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

1, 16, 337, 18700, 7642631 (list; graph; refs; listen; history; text; internal format)

	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`

Last modified February 17 00:25 EST 2020. Contains 331976 sequences. (Running on oeis4.)