A296018 Number of nX7 0..1 arrays with each 1 adjacent to 1 or 4 king-move neighboring 1s.

13, 330, 2319, 26865, 341979, 3547681, 40196846, 459874052, 5101988967, 57424385093, 646799719926, 7252774856538, 81512044070342, 916095800061623, 10289287400808766, 115605932064298664, 1298878810224082958

Offset

1,1

Comments

Column 7 of A296019.

Links

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

Example

Some solutions for n=5
..0..0..1..0..0..1..1. .0..0..0..0..0..1..1. .1..0..0..1..0..1..1
..0..0..0..1..0..0..0. .0..0..0..0..0..0..0. .1..0..0..1..0..0..0
..0..0..1..1..1..0..0. .1..0..0..0..0..0..0. .0..0..0..0..0..0..0
..0..1..0..1..0..1..0. .0..1..0..1..0..0..0. .0..0..0..0..1..0..0
..0..0..0..1..0..0..0. .0..0..0..1..0..0..0. .0..1..1..0..1..0..0

Crossrefs

Cf. A296019.

Sequence in context: A012492 A296395 A183440 * A348087 A142543 A258297

Adjacent sequences: A296015 A296016 A296017 * A296019 A296020 A296021

Keyword

nonn

Author

R. H. Hardin, Dec 02 2017

Status

approved