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%I #8 Oct 18 2021 17:19:41
%S 1,4,90,11016,7083180,23491810780,398328574277322,
%T 34356415364024198698,15026792073190842661982128,
%U 33259034071925704355191308972010
%N Number of n X n nonnegative integer arrays with each row and column increasing from zero by 0, 1, 2 or 3.
%e Some solutions for n=4
%e ..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
%e ..0..1..2..3....0..0..2..2....0..0..3..3....0..0..2..2....0..0..0..1
%e ..0..1..4..6....0..3..4..4....0..1..3..4....0..0..2..4....0..0..0..2
%e ..0..3..4..7....0..3..4..7....0..1..4..7....0..1..4..6....0..0..2..3
%Y Diagonal of A202924.
%K nonn
%O 1,2
%A _R. H. Hardin_, Dec 26 2011
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