A295604 Number of nX6 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 2, 3 or 4 1s.

21, 341, 6080, 119371, 2594128, 59562253, 1412108105, 34084604345, 830405539405, 20326927577606, 498763140162314, 12252986488956085, 301198823186866962, 7406227684806017087, 182140859562873643474, 4479722433974259527069

Offset

1,1

Comments

Column 6 of A295606.

Links

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

Example

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

Crossrefs

Cf. A295606.

Sequence in context: A295350 A068705 A144864 * A323277 A075921 A201878

Adjacent sequences: A295601 A295602 A295603 * A295605 A295606 A295607

Keyword

nonn

Author

R. H. Hardin, Nov 24 2017

Status

approved