A239645 - OEIS

%I #4 Mar 23 2014 07:00:18

%S 16,418,12246,320314,8634040,232304146,6219477628,167002115382,

%T 4480024646968,120194161637198,3224850795644656,86521373598621284,

%U 2321331783000405634,62280781184357139014,1670970691795092353254

%N Number of nX4 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, modulo 4

%C Column 4 of A239649

%H R. H. Hardin, <a href="/A239645/b239645.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

%e ..3..0..0..1....3..0..0..1....3..1..1..3....1..0..0..0....3..1..1..3

%e ..2..1..1..2....2..3..0..0....3..0..0..2....2..1..0..0....2..0..1..2

%e ..1..0..2..2....1..2..0..0....3..0..2..2....3..0..0..1....1..0..2..0

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 23 2014