A239028 - OEIS

%I #7 Aug 11 2014 22:46:10

%S 1,7,22,189,757,7265,33699,339315,1719471,17562449,93885393,958423704,

%T 5294453737,53749275243,303098123295,3057605672892,17472132232105,

%U 175268385351709,1010298392497549,10088889232010085,58495304591252863

%N Number of nX6 0..2 arrays with no element equal to the sum of elements to its left or one plus the sum of elements above it, modulo 3

%C Column 6 of A239030

%H R. H. Hardin, <a href="/A239028/b239028.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A239028/a239028.txt">Empirical recurrence of order 90</a>

%F Empirical recurrence of order 90 (see link above)

%e Some solutions for n=5

%e ..2..0..0..0..0..0....2..0..0..0..0..0....2..0..0..0..0..0....2..0..0..0..0..0

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 09 2014