A241305 Number of nX6 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it or zero plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4.

14, 89, 646, 5757, 49918, 490486, 3893262, 37039909, 307030328, 2801405991, 23598380169, 213133103052

Offset: 1

Author

R. H. Hardin, Apr 18 2014

Keywords

• nonn

Comments

Column 6 of A241306

Examples

			Some solutions for n=4
..2..3..2..2..3..2....3..2..3..2..3..2....3..2..3..3..2..3....3..2..3..2..3..3
..2..3..0..0..3..2....3..0..1..2..1..1....1..2..1..1..2..1....1..2..1..2..1..2
..2..1..2..0..0..3....1..2..0..2..3..1....3..2..0..0..3..2....3..0..0..2..3..1
..1..3..2..1..1..3....3..0..0..1..3..2....1..0..0..2..1..2....1..0..0..2..2..2