A302465 Number of 7Xn 0..1 arrays with every element equal to 0, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

64, 21, 1397, 276, 17189, 25285, 404761, 2588958, 25019102, 250630168, 2450083168, 25229300236, 260128455530, 2666531973080, 27877141564342, 287524621822857, 2998971513860375, 31112820937223507, 323638209029725837

Offset

1,1

Comments

Row 7 of A302460.

Links

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

Example

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

Crossrefs

Cf. A302460.

Sequence in context: A305585 A316692 A302217 * A303247 A302373 A303089

Adjacent sequences: A302462 A302463 A302464 * A302466 A302467 A302468

Keyword

nonn

Author

R. H. Hardin, Apr 08 2018

Status

approved