A302746 Number of 7Xn 0..1 arrays with every element equal to 0, 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

64, 8192, 630604, 50347423, 4104946296, 336148647504, 27552364197684, 2259775666820199, 185346624306819175, 15203212791707362697, 1247058011926331112543, 102291835163573811251710

Offset

1,1

Comments

Row 7 of A302741.

Links

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

Example

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

Crossrefs

Cf. A302741.

Sequence in context: A302740 A299660 A300214 * A300803 A303455 A303461

Adjacent sequences: A302743 A302744 A302745 * A302747 A302748 A302749

Keyword

nonn

Author

R. H. Hardin, Apr 12 2018

Status

approved