A297863 Number of nX5 0..1 arrays with every element equal to 2, 3 or 4 king-move adjacent elements, with upper left element zero.

0, 10, 62, 233, 2621, 21519, 174970, 1556367, 13214094, 114946790, 994170593, 8597453449, 74512061062, 645033668224, 5586152757889, 48378422171047, 418955799991860, 3628283346449943, 31421658477126927, 272119104488034718

Offset

1,2

Comments

Column 5 of A297866.

Links

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

Example

Some solutions for n=7
..0..0..0..0..0. .0..0..0..1..1. .0..0..0..1..1. .0..0..0..1..1
..0..1..1..0..0. .0..1..0..0..1. .1..0..0..0..1. .0..1..0..0..1
..0..1..1..1..1. .0..1..1..0..0. .1..1..1..1..1. .1..1..1..0..0
..0..0..0..0..1. .0..0..0..1..1. .1..0..0..0..1. .0..0..1..1..0
..0..1..1..0..1. .1..1..0..0..1. .1..1..0..1..1. .0..1..0..0..1
..1..1..0..0..1. .0..1..0..1..1. .0..1..1..0..1. .1..0..1..1..0
..1..0..0..1..1. .0..0..0..1..1. .0..0..0..1..1. .1..1..0..0..0

Crossrefs

Cf. A297866.

Sequence in context: A301383 A321386 A015867 * A298130 A106629 A240157

Adjacent sequences: A297860 A297861 A297862 * A297864 A297865 A297866

Keyword

nonn

Author

R. H. Hardin, Jan 07 2018

Status

approved