A295038 Number of nX6 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 2 1s.

21, 876, 19956, 528282, 13706771, 355281224, 9248214732, 240292442848, 6243986963713, 162252303626409, 4216381439247094, 109570922468132003, 2847344541437365138, 73992200911927723171, 1922796991924326509127

Offset

1,1

Comments

Column 6 of A295040.

Links

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

Example

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

Crossrefs

Cf. A295040.

Sequence in context: A297718 A296384 A296641 * A295529 A296737 A202810

Adjacent sequences: A295035 A295036 A295037 * A295039 A295040 A295041

Keyword

nonn

Author

R. H. Hardin, Nov 12 2017

Status

approved