A219083 Number of 6 X n binary arrays with every 0 a horizontal, diagonal or antidiagonal neighbor to some 1.

1, 2007, 137251, 6879341, 407374825, 24734141495, 1473655240387, 87658679181837, 5224891480887673, 311448275014507959, 18561000349587530731, 1106162872162349349293, 65924427026919551179361, 3928917394231408549107271, 234152323978651962065416539, 13954818035471989913784030733

Offset

1,2

Links

R. H. Hardin, Table of n, a(n) for n = 1..23

Example

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

Crossrefs

Row 6 of A219078.

Sequence in context: A295701 A250922 A201343 * A258553 A258560 A281987

Adjacent sequences: A219080 A219081 A219082 * A219084 A219085 A219086

Keyword

nonn,changed

Author

R. H. Hardin, Nov 11 2012

Extensions

New name from Andrew Howroyd, Jul 15 2026

Status

approved