A302825 Number of 7Xn 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

64, 2785, 41247, 317216, 3825201, 72576189, 1135257814, 14619284475, 200681356937, 3056849756061, 45700107132541, 652562677857734, 9367905478940386, 137462732133221430, 2017722521927155963

Offset

1,1

Comments

Row 7 of A302820.

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

Crossrefs

Cf. A302820.

Sequence in context: A303187 A302328 A303021 * A303518 A240483 A240635

Adjacent sequences: A302822 A302823 A302824 * A302826 A302827 A302828

Keyword

nonn

Author

R. H. Hardin, Apr 13 2018

Status

approved