A303089 Number of 7Xn 0..1 arrays with every element equal to 0, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

64, 21, 5472, 4182, 615471, 4862916, 266882021, 5924274499, 231312682374, 7326136324116, 265724475520255, 9228359438652216, 330920558831885611, 11758758712910364555, 421228402696480451106, 15057312628686341086187

Offset

1,1

Comments

Row 7 of A303084.

Links

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

Example

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

Crossrefs

Cf. A303084.

Sequence in context: A302465 A303247 A302373 * A302894 A303629 A302520

Adjacent sequences: A303086 A303087 A303088 * A303090 A303091 A303092

Keyword

nonn

Author

R. H. Hardin, Apr 18 2018

Status

approved