A269080 Number of 6Xn binary arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once.

64, 659, 10167, 123976, 1529241, 18220241, 210476400, 2427784475, 27272243911, 306906072088, 3392662878321, 37516091561153, 410121025237344, 4478699111368451, 48545701054002647, 525277883650197736

Offset

1,1

Comments

Row 6 of A269075.

Links

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

Example

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

Crossrefs

Cf. A269075.

Sequence in context: A250233 A297666 A269586 * A221509 A283337 A187620

Adjacent sequences: A269077 A269078 A269079 * A269081 A269082 A269083

Keyword

nonn

Author

R. H. Hardin, Feb 19 2016

Status

approved