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%I #10 Apr 26 2015 19:08:18
%S 1,1,7,406,132724,164176640,602351808741,5562418293759978,
%T 114601242382721619224,4801114002903931560293544,
%U 379957050243738294456427057200,53499490664883668314419655562118240
%N Number of n X n 0..6 arrays with row sums 6 and column sums 6.
%H R. H. Hardin, <a href="/A172894/b172894.txt">Table of n, a(n) for n = 0..25</a>
%Y Column k=6 of A257493.
%K nonn
%O 0,3
%A _R. H. Hardin_, Feb 06 2010
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