A172574 - OEIS

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

%S 0,0,1,31082452632000,91880966659006902855367890000,

%T 4623755659802671553551698062433487687144266000,

%U 3253924815644553490177047049527865204808456401213720382274024000

%N Number of 3*n X 2*n 0..1 arrays with row sums 6 and column sums 9

%H R. H. Hardin, <a href="/A172574/b172574.txt">Table of n, a(n) for n=1..10</a>

%K nonn

%O 1,4

%A _R. H. Hardin_ Feb 06 2010