A172891 - OEIS

%I #4 Mar 31 2012 12:35:42

%S 0,1,406,3789991,252171345610,92945759551815326,

%T 155517962859038458507570,1010575567197244536303853333716,

%U 22475445868427318276367515097088853904,1540307034615560553585359584559295771487536000

%N Number of n X n 0..6 arrays with row sums 12 and column sums 12

%H R. H. Hardin, <a href="/A172891/b172891.txt">Table of n, a(n) for n=1..12</a>

%K nonn

%O 1,3

%A _R. H. Hardin_ Feb 06 2010