A246988 - OEIS

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A246988

Number of isomorphism classes of oriented matroids of dimension n and cardinality n+3.

1

1, 4, 12, 25, 50, 91, 164

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..7.

Lukas Finschi, Homepage of Oriented Matroids

CROSSREFS

A diagonal of A063804.

Sequence in context: A008264 A000297 A078618 * A304843 A062883 A364373

Adjacent sequences: A246985 A246986 A246987 * A246989 A246990 A246991

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Sep 17 2014

EXTENSIONS

a(4) corrected by Andrey Zabolotskiy, Mar 26 2023

STATUS

approved