A302373 Number of 7Xn 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

64, 21, 5110, 3143, 367512, 3858625, 188443738, 4558781926, 165780766701, 5415891438878, 189247523369764, 6553114775753702, 229298263096647662, 8027176450120824795, 281624648305633428630, 9882003741109888621778

Offset

1,1

Comments

Row 7 of A302367.

Links

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

Example

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

Crossrefs

Cf. A302367.

Sequence in context: A302217 A302465 A303247 * A303089 A302894 A303629

Adjacent sequences: A302370 A302371 A302372 * A302374 A302375 A302376

Keyword

nonn

Author

R. H. Hardin, Apr 06 2018

Status

approved