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%I #10 Apr 27 2015 11:25:37
%S 1,1,8,666,381424,976395820,8575979362560,215717608046511873,
%T 13590707419428422843904,1933216160887575268614599040,
%U 571506744082785127089569166384000
%N Number of n X n 0..7 arrays with row sums 7 and column sums 7.
%H R. H. Hardin, <a href="/A172919/b172919.txt">Table of n, a(n) for n = 0..20</a>
%Y Column k=7 of A257493.
%K nonn
%O 0,3
%A _R. H. Hardin_, Feb 06 2010
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