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%I #7 May 19 2023 07:58:03
%S 2,23,1337,394509,614216271,5072216819342,217822754771248124,
%T 49235710631611399112515,58260708510317695923927600575
%N Number of n X n 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of the elements above it, modulo 4.
%C Diagonal of A239405.
%e Some solutions for n=3
%e ..0..3..3....0..3..1....3..1..0....0..0..0....3..1..0....0..0..0....3..3..1
%e ..3..3..2....0..2..0....2..2..3....0..0..0....0..2..1....3..1..3....3..3..2
%e ..3..1..2....0..0..0....2..2..2....3..3..1....0..0..0....3..1..2....2..2..2
%Y Cf. A239405.
%K nonn
%O 1,1
%A _R. H. Hardin_, Mar 17 2014
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