A241354 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 one 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, 53, 230, 1721, 6307, 35880, 183400, 763750, 4110488, 18352240, 83810292, 417928329, 1791097147, 8714733830, 40609374842, 179584055937

Offset: 1

Author

R. H. Hardin, Apr 20 2014

Keywords

• nonn

Comments

Column 6 of A241356

Examples

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