A297344 Number of 7Xn 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 0 or 2 neighboring 1s.

128, 987, 35568, 538819, 12964224, 242728633, 5193690642, 103574723331, 2142578906273, 43505006669691, 891632017546020, 18191907199249891, 371961523388530138, 7597903148736232018, 155267718780879744807

Offset

1,1

Comments

Row 7 of A297338.

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

Crossrefs

Cf. A297338.

Sequence in context: A224043 A188841 A188704 * A183976 A183972 A143708

Adjacent sequences: A297341 A297342 A297343 * A297345 A297346 A297347

Keyword

nonn

Author

R. H. Hardin, Dec 28 2017

Status

approved