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A256159
Number of 2-polymatroids on n labeled points.
3
1, 3, 14, 115, 2040, 109707, 39445994, 1560089623047
OFFSET
0,2
LINKS
Thomas J. Savitsky, Enumeration of 2-polymatroids on up to seven elements. SIAM J. Discrete Math., 28(4):1641-1650, 2014. arXiv:1401.8006
CROSSREFS
Row sums of A256158.
Sequence in context: A333797 A229113 A180435 * A122081 A007140 A161936
KEYWORD
nonn,more
AUTHOR
Max Alekseyev, Mar 16 2015
STATUS
approved