A241434 Number of nX7 0..3 arrays with no element equal to one 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 one plus the sum of the elements antidiagonally to its northeast, modulo 4.

24, 181, 1272, 22712, 282527, 4122537, 79901137, 1231102996, 26880310825, 446955799466

Offset: 1

Author

R. H. Hardin, Apr 22 2014

Keywords

• nonn

Comments

Column 7 of A241435

Examples

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