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A172673 Number of 3*n X 9 0..2 arrays with row sums 3 and column sums n 1

%I

%S 1680,747558000,655551508577280,853588467101915622000,

%T 1392491976667637592480814080,2631822682451717147804985743769600,

%U 5516710929099784554483904755922151424000

%N Number of 3*n X 9 0..2 arrays with row sums 3 and column sums n

%H R. H. Hardin, <a href="/A172673/b172673.txt">Table of n, a(n) for n=1..24</a>

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 06 2010

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Last modified April 20 03:03 EDT 2019. Contains 322294 sequences. (Running on oeis4.)