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A246989 Number of isomorphism classes of oriented matroids of dimension n and cardinality n+4. 1
1, 17, 206, 6029, 508321 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..5.

L. Finschi, Homepage of Oriented Matroids

CROSSREFS

A diagonal of A063804.

Sequence in context: A016306 A021092 A219124 * A016981 A158009 A158005

Adjacent sequences:  A246986 A246987 A246988 * A246990 A246991 A246992

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Sep 17 2014

STATUS

approved

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Last modified April 25 23:48 EDT 2019. Contains 322465 sequences. (Running on oeis4.)