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A239984 Number of nX6 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.

%I A239984 #6 Jun 02 2025 09:36:09
%S A239984 1,7,65,1495,31226,652346,16721012,381369904,9009351655,233083355837,
%T A239984 5373732732783,130821770741989,3240495708022575,75383547521530003,
%U A239984 1859081645190913254,44959584675029390497,1062939483571455261657
%N A239984 Number of nX6 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.
%C A239984 Column 6 of A239986
%H A239984 R. H. Hardin, <a href="/A239984/b239984.txt">Table of n, a(n) for n = 1..19</a>
%e A239984 Some solutions for n=3
%e A239984 ..3..0..0..0..0..0....3..0..0..0..0..0....3..0..0..0..0..0....3..0..0..0..0..0
%e A239984 ..2..1..0..0..0..0....2..3..0..0..0..0....2..3..0..3..3..0....2..3..0..0..3..3
%e A239984 ..2..0..3..0..0..3....2..0..0..0..0..3....2..0..0..3..2..1....2..0..1..0..2..2
%K A239984 nonn
%O A239984 1,2
%A A239984 _R. H. Hardin_, Mar 30 2014