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Number of 6*n X n 0..1 arrays with row sums 3 and column sums 18
1

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

%S 0,0,1,2308743493056,674741194624071430134879600,

%T 4286480050914725856131217361234536200970000,

%U 422006703164863149555124419847097220761027785050113408280000

%N Number of 6*n X n 0..1 arrays with row sums 3 and column sums 18

%H R. H. Hardin, <a href="/A172598/b172598.txt">Table of n, a(n) for n=1..11</a>

%K nonn

%O 1,4

%A _R. H. Hardin_ Feb 06 2010