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A256159 Number of 2-polymatroids on n labeled points. 3
1, 3, 14, 115, 2040, 109707, 39445994, 1560089623047 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..7.

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.

Cf. A256156, A256157, A058673.

Sequence in context: A279429 A229113 A180435 * A122081 A007140 A161936

Adjacent sequences:  A256156 A256157 A256158 * A256160 A256161 A256162

KEYWORD

nonn,more

AUTHOR

Max Alekseyev, Mar 16 2015

STATUS

approved

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Last modified October 15 05:43 EDT 2019. Contains 328026 sequences. (Running on oeis4.)