A302155 Number of 7 X n 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

64, 1, 260, 1025, 8152, 128319, 1728734, 26544210, 439103633, 7478635467, 131386907715, 2344378104516, 42235221450124, 765312882037454, 13907043370373429, 253045503157946243, 4606517701125024786

Offset

1,1

Comments

Row 7 of A302150.

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..1..0..1..1. .0..1..1..1..1. .0..1..1..1..0
..1..1..0..0..0. .0..1..1..1..1. .1..1..1..1..1. .1..1..1..1..1
..1..1..1..0..0. .1..1..0..1..1. .0..1..1..1..1. .1..1..0..1..1
..1..1..1..0..0. .1..1..1..1..1. .0..1..1..1..1. .1..1..1..1..1
..1..1..0..0..1. .0..1..1..1..1. .0..1..1..1..0. .0..1..1..1..1
..0..1..1..0..0. .0..1..1..1..1. .0..1..0..1..1. .1..1..1..1..1
..1..1..0..0..1. .1..1..1..1..0. .1..1..1..1..0. .0..1..1..1..0

Crossrefs

Cf. A302150.

Sequence in context: A174927 A303329 A301911 * A351246 A371277 A288923

Adjacent sequences: A302152 A302153 A302154 * A302156 A302157 A302158

Keyword

nonn

Author

R. H. Hardin, Apr 02 2018

Status

approved