A296379 Number of n X n 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1 or 2 neighboring 1's.

1, 10, 127, 5389, 684894, 229596763, 221204933878, 598689439654822, 4539934561727233074, 96984131003613095035054, 5821690240110920955236476834, 982375769397408661603126936349101

Offset

1,2

Comments

Diagonal of A296386.

Links

R. H. Hardin, Table of n, a(n) for n = 1..13

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

Crossrefs

Cf. A296386.

Sequence in context: A245923 A218474 A234284 * A183538 A184678 A360941

Adjacent sequences: A296376 A296377 A296378 * A296380 A296381 A296382

Keyword

nonn

Author

R. H. Hardin, Dec 11 2017

Status

approved