A282837 Number of nX7 0..1 arrays with no 1 equal to more than one of its king-move neighbors, with the exception of exactly two elements.

13, 544, 34464, 1172252, 33527252, 957808843, 25269280218, 643705916373, 16010099108460, 388020733786517, 9247437037805448, 217036671914282451, 5029023759579668243, 115284880924811399314, 2617941571002141930815

Offset

1,1

Comments

Column 7 of A282838.

Links

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

Example

Some solutions for n=3
..0..1..0..0..0..0..1. .1..0..0..1..0..0..0. .0..0..1..0..1..0..0
..0..0..1..0..0..0..1. .1..0..1..0..0..0..0. .0..0..0..1..0..0..0
..1..0..0..1..0..0..1. .0..0..0..1..1..0..1. .0..0..1..0..1..1..0

Crossrefs

Cf. A282838.

Sequence in context: A229263 A308865 A143601 * A203360 A265503 A050286

Adjacent sequences: A282834 A282835 A282836 * A282838 A282839 A282840

Keyword

nonn

Author

R. H. Hardin, Feb 22 2017

Status

approved