A198450 Number of 2nX8 0..2 arrays with values 0..2 introduced in row major order and each element unequal to exactly two horizontal and vertical neighbors

433, 14109, 421185, 13048509, 396482929, 12354617337, 388054368497, 12268223577717, 389802133342121, 12442366745406193, 398756914767870161, 12824613775169911957, 413731612612141327185, 13383113394670397174673

Offset

1,1

Comments

Column 4 of A198452

Links

R. H. Hardin, Table of n, a(n) for n = 1..18

Example

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

Crossrefs

Sequence in context: A059665 A059664 A289857 * A241925 A108832 A055009

Adjacent sequences: A198447 A198448 A198449 * A198451 A198452 A198453

Keyword

nonn

Author

R. H. Hardin Oct 25 2011

Status

approved