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%I A172608 #4 Mar 31 2012 12:35:40
%S A172608 68938800,617944896216648000,12218892645550878420052920000,
%T A172608 337799058758556439723480176591336120000,
%U A172608 11251027489082268563385494644966780470231583948800
%N A172608 Number of 7*n X 7 0..1 arrays with row sums 3 and column sums 3*n
%H A172608 R. H. Hardin, <a href="/A172608/b172608.txt">Table of n, a(n) for n=1..13</a>
%K A172608 nonn
%O A172608 1,1
%A A172608 _R. H. Hardin_ Feb 06 2010

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