%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