A295039 Number of nX7 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 2 1s.

37, 2735, 104096, 4738235, 209181266, 9248214732, 411280569141, 18227207589288, 807975522778623, 35828949243544333, 1588724655137268304, 70444327993290622210, 3123514826860958239480, 138498446900583005504125

Offset

1,1

Comments

Column 7 of A295040.

Links

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

Example

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

Crossrefs

Cf. A295040.

Sequence in context: A296738 A296385 A296642 * A295530 A174750 A183524

Adjacent sequences: A295036 A295037 A295038 * A295040 A295041 A295042

Keyword

nonn

Author

R. H. Hardin, Nov 12 2017

Status

approved