A296334 Number of nX7 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0 or 2 neighboring 1s.

34, 705, 10277, 180404, 3051494, 51335713, 869077778, 14686634221, 248214082895, 4195672165071, 70917160317395, 1198689440814874, 20261102869525595, 342467454375040876, 5788629587868911080, 97843565288256133869

Offset

1,1

Comments

Column 7 of A296335.

Links

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

Example

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

Crossrefs

Cf. A296335.

Sequence in context: A061689 A166217 A188711 * A296634 A016109 A028211

Adjacent sequences: A296331 A296332 A296333 * A296335 A296336 A296337

Keyword

nonn

Author

R. H. Hardin, Dec 10 2017

Status

approved