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

%I #12 Oct 14 2024 10:55:31

%S 1,13,169,112489,10309971465,121778484808846083,

%T 193842679171307621077398205

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

%Y Column k=12 of A202784.

%K nonn,more

%O 0,2

%A _R. H. Hardin_, Feb 20 2002

%E a(5)-a(6) from _Sean A. Irvine_, Dec 11 2023

%E a(0)=1 prepended by _Andrew Howroyd_, Oct 14 2024