A241325 Number of nX4 0..3 arrays with no element equal to fewer vertical neighbors than horizontal neighbors, with new values 0..3 introduced in row major order.

5, 530, 68935, 8949808, 1162535788, 151022716125, 19619065042282, 2548674277117248, 331093294165744259, 43011682813264944327, 5587563659405034428031, 725869475605161121443285

Offset: 1

Author

R. H. Hardin, Apr 19 2014

Keywords

• nonn

Comments

Column 4 of A241328

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 53

Formula

Empirical recurrence of order 53 (see link above)