A303530 Number of 7Xn 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

64, 86, 687, 4112, 56046, 965150, 15768709, 258412452, 4730074082, 89182240009, 1607792486756, 28651954738510, 525363767853510, 9705710828046354, 176560700611952149, 3198325214799036047, 58453456076912623357

Offset

1,1

Comments

Row 7 of A303525.

Links

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

Example

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

Crossrefs

Cf. A303525.

Sequence in context: A302315 A303045 A302882 * A119894 A138667 A290462

Adjacent sequences: A303527 A303528 A303529 * A303531 A303532 A303533

Keyword

nonn

Author

R. H. Hardin, Apr 25 2018

Status

approved