A297863 - OEIS

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

(list; graph; refs; listen; history; text; internal format)

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