A172575 - OEIS

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

%S 0,0,1,63063000,149144498504001000,2834492178580299130305958000,

%T 337799058758556439723480176591336120000,

%U 203269774721184658406475682049947158681837795504000

%N Number of 4*n X n 0..1 arrays with row sums 3 and column sums 12

%H R. H. Hardin, <a href="/A172575/b172575.txt">Table of n, a(n) for n=1..16</a>

%K nonn

%O 1,4

%A _R. H. Hardin_ Feb 06 2010