A296587 Number of nX7 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0, 2 or 3 neighboring 1s.

34, 1358, 26895, 923475, 32689069, 1109882746, 39585589653, 1408384872667, 50119033383361, 1788025832012463, 63778938480161860, 2275432663246599492, 81187972416766005085, 2896820351120192686438, 103361550677350864438976

Offset

1,1

Comments

Column 7 of A296588.

Links

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

Example

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

Crossrefs

Cf. A296588.

Sequence in context: A158731 A297693 A093550 * A212735 A123790 A297636

Adjacent sequences: A296584 A296585 A296586 * A296588 A296589 A296590

Keyword

nonn

Author

R. H. Hardin, Dec 16 2017

Status

approved