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A239990 Number of 6Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.

%I A239990 #7 Jun 02 2025 09:36:42
%S A239990 10,84,935,9079,83658,652346,4803152,33097266,216706121,1349071998,
%T A239990 8021288399,45621294425,248975151409,1305176292249,6573063784889,
%U A239990 31800829162681,147862529519971,661287427073134,2848137371338660
%N A239990 Number of 6Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.
%C A239990 Row 6 of A239986
%H A239990 R. H. Hardin, <a href="/A239990/b239990.txt">Table of n, a(n) for n = 1..210</a>
%H A239990 R. H. Hardin, <a href="/A239990/a239990.txt">Empirical polynomial of degree 55</a>
%F A239990 Empirical polynomial of degree 55 (see link above)
%e A239990 Some solutions for n=3
%e A239990 ..3..0..0....3..0..0....3..0..0....3..0..0....3..0..0....3..0..0....3..0..0
%e A239990 ..3..1..3....2..1..0....3..1..3....2..3..3....2..3..0....2..1..0....3..1..3
%e A239990 ..3..2..3....2..0..3....2..1..2....2..0..0....2..0..1....2..0..0....3..2..0
%e A239990 ..2..3..3....3..0..2....3..2..0....3..2..0....3..2..2....2..0..1....2..3..3
%e A239990 ..3..1..2....3..2..2....3..1..2....3..2..3....2..1..0....2..0..1....3..1..2
%e A239990 ..2..3..3....2..3..3....3..2..2....2..3..3....3..2..3....3..0..2....2..3..3
%K A239990 nonn
%O A239990 1,1
%A A239990 _R. H. Hardin_, Mar 30 2014