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%I A172565 #4 Mar 31 2012 12:35:40
%S A172565 0,0,0,0,0,0,1,369398958888960000,
%T A172565 2343976695927269878444049332219968000,
%U A172565 27470008383944006158001488120005460494368265540960000000,960689698603154580472955204587017348140176811923434228399447157783872000000
%N A172565 Number of 3*n X n 0..1 arrays with row sums 7 and column sums 21
%H A172565 R. H. Hardin, <a href="/A172565/b172565.txt">Table of n, a(n) for n=1..12</a>
%K A172565 nonn
%O A172565 1,8
%A A172565 _R. H. Hardin_ Feb 06 2010

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