A297380 Number of 7Xn 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 0, 1 or 2 neighboring 1s.

128, 16384, 899565, 67012245, 5201484239, 383128155296, 28559447121714, 2136915074062801, 159485442516170020, 11906501694015288457, 889085359991168514569, 66384075576730768153403, 4956603963267788832571902

Offset

1,1

Comments

Row 7 of A297374.

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

Crossrefs

Cf. A297374.

Sequence in context: A189115 A188908 A189109 * A283863 A223568 A144321

Adjacent sequences: A297377 A297378 A297379 * A297381 A297382 A297383

Keyword

nonn

Author

R. H. Hardin, Dec 29 2017

Status

approved