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

1,1

Comments

Row 2 of A232281.

Links

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

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).

Example

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

Crossrefs

Cf. A232281.

Sequence in context: A118414 A279218 A322239 * A364573 A271425 A267081

Adjacent sequences: A232279 A232280 A232281 * A232283 A232284 A232285

Keyword

nonn

Author

R. H. Hardin, Nov 22 2013

Status

approved