%I #8 Jul 19 2023 07:29:26
%S 8,56,9128,68544440,24146966505628
%N Number of n X n 0..7 arrays with row and column sums one greater than the previous row and column.
%e Some solutions for n=3
%e ..3..6..1....5..0..7....0..1..6....0..2..5....5..0..0....7..0..4....5..3..3
%e ..5..2..4....1..6..6....1..5..2....2..5..1....0..5..1....3..5..4....1..5..6
%e ..2..3..7....6..7..1....6..2..1....5..1..3....0..1..6....1..7..5....5..4..4
%Y Column 7 of A202864.
%K nonn,more
%O 1,1
%A _R. H. Hardin_, Dec 25 2011