A239989 Number of 5Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.

7, 40, 261, 1391, 7113, 31226, 131242, 514539, 1914507, 6772946, 22897312, 74168162, 230889987, 691544987, 1994352403, 5541664374, 14851119427, 38433580993, 96194422578, 233234971795, 548761214881, 1255035407604

Offset: 1

Author

R. H. Hardin, Mar 30 2014

Keywords

• nonn

Comments

Row 5 of A239986

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical polynomial of degree 24

Formula

Empirical polynomial of degree 24 (see link above)