A240458 Number of nX4 0..3 arrays with no element equal to one plus the sum of elements to its left or three plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.

16, 375, 7589, 143237, 2632690, 47636104, 854671234, 15259447330, 271656519692, 4827854253348, 85712180553955, 1520764060039331, 26972330503325401, 478273812124771069, 8479592950284098842, 150327053689019608051

Offset: 1

Author

R. H. Hardin, Apr 05 2014

Keywords

• nonn

Comments

Column 4 of A240460

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210