A172707 - OEIS

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

%S 1,616227,338183208699840,17928312105849154413381000,

%T 29871310888030132154949642916374456000,

%U 792606936905424716827805609592848631050897983368000

%N Number of 7*n X n 0..2 arrays with row sums 2 and column sums 14

%H R. H. Hardin, <a href="/A172707/b172707.txt">Table of n, a(n) for n=1..13</a>

%K nonn

%O 1,2

%A _R. H. Hardin_ Feb 06 2010