A232282 Number of 2 X n 0..2 arrays with no element less than a strict majority of its horizontal, diagonal and antidiagonal neighbors.

9, 35, 199, 1066, 6019, 32301, 174400, 944500, 5142177, 27937799, 151639871, 822991186, 4468833656, 24267873410, 131775553922, 715505284261, 3885076657421, 21095823631806, 114549994256771, 622001619001412

Offset: 1

Author

R. H. Hardin, Nov 22 2013

Keywords

• nonn

Comments

Row 2 of A232281.

Examples

			Some solutions for n=7
..0..2..2..2..0..0..0....0..2..1..1..0..2..0....0..0..0..2..0..0..0
..2..0..0..0..1..0..2....2..0..0..0..2..0..2....0..2..1..0..1..2..2
		

Links

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

Crossrefs

Cf. A232281.

Formula

Empirical: a(n) = 9*a(n-1) -23*a(n-2) +20*a(n-3) +81*a(n-4) -511*a(n-5) +294*a(n-6) +150*a(n-7) -168*a(n-8) +1692*a(n-9) +432*a(n-10).