A183521 - OEIS

A183521

Number of nX4 0..2 arrays with each element equal to either the sum mod 3 of its horizontal and vertical neighbors or the sum mod 3 of its diagonal and antidiagonal neighbors

7, 95, 543, 3507, 27609, 201833, 1521573, 11678037, 89238523, 683029435, 5235031077, 40141122349, 307807564417, 2360732530937, 18105826441313, 138867315400205, 1065099011259479, 8169267911756541, 62658120915577663

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 4 of A183526

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

EXAMPLE

Some solutions for 3X4

..2..1..2..1....2..1..0..1....1..1..2..2....2..1..0..0....0..0..2..0

..1..1..0..2....2..2..1..0....0..1..2..0....1..2..2..0....1..0..2..1

..1..2..0..2....1..2..2..1....1..1..2..2....0..2..0..2....2..1..2..2