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A239601 Number of 3Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.

%I A239601 #6 Jun 02 2025 09:29:45
%S A239601 4,4,31,187,1310,9806,76769,611126,4929897,39990616,325367130,
%T A239601 2651480323,21625911002,176464323565,1440276473432,11756877845964,
%U A239601 95977420564389,783542978550992,6396841387070227,52224370266137630,426366892135459667
%N A239601 Number of 3Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.
%C A239601 Row 3 of A239599
%H A239601 R. H. Hardin, <a href="/A239601/b239601.txt">Table of n, a(n) for n = 1..75</a>
%e A239601 Some solutions for n=4
%e A239601 ..3..2..2..0....3..2..2..0....3..0..0..2....3..0..0..2....3..2..2..2
%e A239601 ..2..1..0..2....2..1..2..2....2..3..0..0....2..3..0..0....2..1..0..2
%e A239601 ..3..2..0..0....3..2..0..0....3..1..2..0....3..2..2..0....3..2..0..2
%K A239601 nonn
%O A239601 1,1
%A A239601 _R. H. Hardin_, Mar 22 2014