A240628 Number of n X 5 0..3 arrays with no element equal to exactly two horizontal and vertical neighbors, with new values 0..3 introduced in row major order.

40, 16624, 7462748, 3367163455, 1519699081714, 685854075788477, 309535605539765299, 139697630796640339536, 63047448929964784303613, 28454174772679454861874697, 12841757682871155282688313826, 5795660627332850278874835069098, 2615660794724892372200960575345057

Offset: 1

Author

R. H. Hardin, Apr 09 2014

Keywords

• nonn

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..25

Crossrefs

Column 5 of A240629.