A239652 - OEIS

%I #5 Aug 11 2014 22:46:11

%S 22,560,13476,320314,7629186,181039448,4304123072,102200616210,

%T 2428626527384,57685354968172,1370565397733518,32557886444429002,

%U 773502177670875660,18375412388378425556,436547133372227822360

%N Number of 4Xn 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, modulo 4

%C Row 4 of A239649

%H R. H. Hardin, <a href="/A239652/b239652.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A239652/a239652.txt">Empirical recurrence of order 91</a>

%F Empirical recurrence of order 91 (see link above)

%e Some solutions for n=3

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 23 2014