A240375 Number of n X 6 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, modulo 4.

15, 353, 7233, 271764, 6436979, 169838571, 5145071133, 121626491919, 3384817934297, 91027175836503, 2222522848709145, 62148514553083420, 1602155697723521517, 41356217735570589779, 1131174318003611087054

Offset: 1

Author

R. H. Hardin, Apr 04 2014

Keywords

• nonn

Comments

Column 6 of A240376.

Examples

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

Crossrefs

Cf. A240376.