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Number of n X n 0..8 matrices with all row and column sums equal.
1

%I #11 Oct 14 2024 10:55:42

%S 1,9,81,18081,264639729,239657412990669,14022194613733384575957,

%T 55099298574634623527360069025765

%N Number of n X n 0..8 matrices with all row and column sums equal.

%Y Column k=8 of A202784.

%K nonn,more

%O 0,2

%A _R. H. Hardin_, Feb 20 2002

%E a(5)-a(7) from _Sean A. Irvine_, Dec 12 2023

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