A297368 Number of n X n 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 0, 1 or 2 neighboring 1's.

2, 16, 393, 33054, 9554038, 9012089653, 28559447121714, 303815967798840330, 10773278233104610398411, 1277577652466325205472347977, 506760911000629827324155339742511

Offset

1,1

Comments

Diagonal of A297374.

Links

R. H. Hardin, Table of n, a(n) for n = 1..19

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

Crossrefs

Cf. A297374.

Sequence in context: A012390 A009613 A012388 * A012752 A188904 A189104

Adjacent sequences: A297365 A297366 A297367 * A297369 A297370 A297371

Keyword

nonn

Author

R. H. Hardin, Dec 29 2017

Status

approved