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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
OFFSET
1,2
CROSSREFS
A diagonal of A063804.
Sequence in context: A016306 A021092 A219124 * A016981 A158009 A158005
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Sep 17 2014
STATUS
approved