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A172666 Number of 3*n X n 0..2 arrays with row sums 7 and column sums 21 1

%I #4 Mar 31 2012 12:35:40

%S 0,0,0,369600,8432855707512236000,2333327772435239191435579651896000,

%T 7912042661932746320895028318655823357822209601009,

%U 288661272140059402021783839980598829830361488723258925444306851840

%N Number of 3*n X n 0..2 arrays with row sums 7 and column sums 21

%H R. H. Hardin, <a href="/A172666/b172666.txt">Table of n, a(n) for n=1..10</a>

%K nonn

%O 1,4

%A _R. H. Hardin_ Feb 06 2010

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Last modified June 25 04:03 EDT 2024. Contains 373697 sequences. (Running on oeis4.)