A282884 Number of nX7 0..1 arrays with no 1 equal to more than one of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element.

26, 1414, 67676, 2342046, 80114311, 2561487246, 79687436788, 2422749969094, 72384911847530, 2134206947210504, 62249002221009867, 1799694062835383562, 51649085124007452943, 1473029187027581364502, 41785825649251975653356

Offset

1,1

Comments

Column 7 of A282885.

Links

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

Example

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

Crossrefs

Cf. A282885.

Sequence in context: A114052 A042303 A042300 * A080163 A368852 A300578

Adjacent sequences: A282881 A282882 A282883 * A282885 A282886 A282887

Keyword

nonn

Author

R. H. Hardin, Feb 24 2017

Status

approved