A302306 Number of nX5 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

8, 31, 48, 194, 445, 1271, 3915, 12420, 42897, 158170, 605532, 2395817, 9709409, 39880121, 165585758, 693033415, 2914777618, 12305134022, 52090542883, 220906709231, 938079788895, 3987432050368, 16960357014483, 72175348991290

Offset

1,1

Comments

Column 5 of A302309.

Links

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

Example

Some solutions for n=5
..0..1..0..1..0. .0..1..1..0..1. .0..1..0..0..1. .0..0..1..0..1
..0..1..0..1..0. .1..0..1..0..0. .0..1..0..1..0. .0..1..0..0..1
..1..1..0..0..0. .1..0..1..0..1. .0..1..0..1..0. .0..1..0..0..0
..1..1..1..1..1. .0..0..1..0..1. .1..1..0..1..0. .0..1..1..0..1
..0..1..1..0..1. .1..0..1..0..1. .0..1..0..0..0. .0..1..0..1..1

Crossrefs

Cf. A302309.

Sequence in context: A304218 A304130 A305479 * A067950 A303037 A230386

Adjacent sequences: A302303 A302304 A302305 * A302307 A302308 A302309

Keyword

nonn

Author

R. H. Hardin, Apr 05 2018

Status

approved