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A058194 Number of n-rowed matrices with entries {0,1,2,3} and all row sums 3, up to row and column permutation. 0
1, 3, 21, 162, 1636, 19977, 298416, 5300296, 110219750, 2639842989, 71859429837, 2198244062193, 74860247277672, 2815351714711122, 116130005180284423, 5222901881792429337, 254791333526874348652, 13420798291405599027605, 760201936044714899316798, 46137860613934391781325337, 2990483661567310913388458734 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..20.

PROG

(PARI) \\ See A318951 for RowSumMats

a(n)=RowSumMats(n, 3*n, 3); \\ Andrew Howroyd, Sep 06 2018

CROSSREFS

Cf. A007717, A058407, A058409, A050913.

Sequence in context: A225439 A180400 A166696 * A179815 A118353 A262977

Adjacent sequences:  A058191 A058192 A058193 * A058195 A058196 A058197

KEYWORD

nonn

AUTHOR

Vladeta Jovovic, Nov 27 2000

EXTENSIONS

a(11)-a(20) from Andrew Howroyd, Sep 06 2018

STATUS

approved

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Last modified November 19 20:42 EST 2019. Contains 329323 sequences. (Running on oeis4.)