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A067220 Number of n X n 0..12 matrices with all row and column sums equal. 1

%I

%S 13,169,112489,10309971465

%N Number of n X n 0..12 matrices with all row and column sums equal.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 20 2002

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Last modified May 26 17:16 EDT 2022. Contains 354092 sequences. (Running on oeis4.)