A222492 Number of 5Xn 0..2 arrays with exactly floor(5Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order

0, 36, 365, 3219, 20638, 356202, 2728712, 65171022, 578161088, 15540562678, 148151147961, 4120797343227, 39999651107228, 1125491075317838, 10980310586148575

Offset

1,2

Comments

Row 5 of A222488

Links

Table of n, a(n) for n=1..15.

Example

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

Crossrefs

Sequence in context: A250422 A223307 A244795 * A203282 A071232 A135828

Adjacent sequences: A222489 A222490 A222491 * A222493 A222494 A222495

Keyword

nonn

Author

R. H. Hardin Feb 22 2013

Status

approved