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A240273 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, modulo 4.

%I A240273 #6 Jun 02 2025 09:45:32
%S A240273 4,14,118,919,7562,64721,563496,4956889,43888821,390006208,3473152825,
%T A240273 30971163817,276395100537,2467754655037,22039067141607,
%U A240273 196858997624033,1758568575970935,15710437359317486,140356344121017589
%N A240273 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, modulo 4.
%C A240273 Row 3 of A240271
%H A240273 R. H. Hardin, <a href="/A240273/b240273.txt">Table of n, a(n) for n = 1..210</a>
%e A240273 Some solutions for n=4
%e A240273 ..2..3..2..0....2..0..0..0....2..0..3..0....2..3..0..2....3..0..0..0
%e A240273 ..2..1..1..2....2..0..3..3....2..0..3..3....2..1..2..2....2..3..0..3
%e A240273 ..3..2..2..0....3..0..1..2....3..0..0..1....2..0..1..0....3..2..0..3
%K A240273 nonn
%O A240273 1,1
%A A240273 _R. H. Hardin_, Apr 03 2014