A295049 Number of nX6 0..1 arrays with each 1 horizontally or vertically adjacent to 0 or 2 1s.

21, 299, 3879, 52199, 700972, 9388654, 125887202, 1687776548, 22627774940, 303374187415, 4067381827553, 54531991863699, 731118983022104, 9802227619735676, 131420017672187029, 1761969037670761907

Offset

1,1

Comments

Column 6 of A295051.

Links

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

Example

Some solutions for n=4
..0..0..0..0..1..0. .1..0..0..0..1..0. .1..1..0..0..1..0. .1..0..1..0..0..1
..0..1..0..1..0..1. .0..0..0..1..0..0. .1..1..0..1..0..1. .0..0..0..0..1..0
..0..0..1..0..0..0. .0..0..0..0..0..0. .0..0..0..0..1..0. .1..0..0..0..0..0
..0..0..0..0..0..0. .1..0..0..0..1..0. .1..0..0..0..0..0. .0..1..0..0..1..0

Crossrefs

Cf. A295051.

Sequence in context: A021829 A019943 A021634 * A295377 A021604 A025935

Adjacent sequences: A295046 A295047 A295048 * A295050 A295051 A295052

Keyword

nonn

Author

R. H. Hardin, Nov 13 2017

Status

approved