A295252 Number of nX7 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1 or 3 1s.

81, 3082, 132993, 5611444, 238620900, 10130231034, 430246838462, 18271078872449, 775938327252984, 32952280860905243, 1399410212643690245, 59429797645640463296, 2523850141539679904426, 107182244435332709744186

Offset

1,1

Comments

Column 7 of A295253.

Links

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

Example

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

Crossrefs

Cf. A295253.

Sequence in context: A253516 A038398 A205902 * A295651 A143652 A270343

Adjacent sequences: A295249 A295250 A295251 * A295253 A295254 A295255

Keyword

nonn

Author

R. H. Hardin, Nov 18 2017

Status

approved