A302228 Number of 5Xn 0..1 arrays with every element equal to 1, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

0, 111, 675, 4237, 40395, 338204, 3018243, 26373655, 229022022, 2020776808, 17623530150, 154526692002, 1354126269239, 11852307962264, 103884063578946, 909810907872807, 7970268921853663, 69825955304629074, 611653034702238664

Offset

1,2

Comments

Row 5 of A302224.

Links

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

Example

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

Crossrefs

Cf. A302224.

Sequence in context: A304516 A259246 A205830 * A302671 A283649 A084450

Adjacent sequences: A302225 A302226 A302227 * A302229 A302230 A302231

Keyword

nonn

Author

R. H. Hardin, Apr 03 2018

Status

approved