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A172894 Number of n X n 0..6 arrays with row sums 6 and column sums 6. 4

%I

%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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Last modified February 21 23:00 EST 2020. Contains 332113 sequences. (Running on oeis4.)