A241106 Number of nX6 0..2 arrays with no element equal to one or three horizontal or vertical neighbors, with new values 0..2 introduced in row major order.

16, 376, 7846, 162776, 3374086, 70145916, 1454236806, 30189380016, 626548445696, 13004327687556, 269904513767276, 5601924832399656, 116268494681555446, 2413172096267222836, 50085748850277170776, 1039537719846439186376

Offset: 1

Author

R. H. Hardin, Apr 16 2014

Keywords

• nonn

Comments

Column 6 of A241108

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 76

Formula

Empirical recurrence of order 76 (see link above)