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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
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..5.
Lukas 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 24 19:39 EDT 2024. Contains 371963 sequences. (Running on oeis4.)