A298257 Number of nX6 0..1 arrays with every element equal to 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.

0, 13, 7, 72, 238, 895, 3335, 13980, 55889, 230402, 953813, 3957108, 16359243, 67815820, 280896101, 1164014899, 4823739307, 19992787735, 82860456229, 343442251791, 1423487855696, 5900154785814, 24455403244104, 101365322534618

Offset

1,2

Comments

Column 6 of A298259.

Links

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

Example

Some solutions for n=8
..0..0..1..1..1..1. .0..0..0..0..1..1. .0..0..1..1..1..1. .0..0..1..1..0..0
..0..1..0..0..0..1. .0..1..1..0..0..1. .0..1..1..0..0..1. .0..1..1..0..1..0
..1..0..1..1..1..0. .1..0..1..1..1..0. .0..1..0..1..1..0. .1..0..0..0..1..0
..1..1..0..0..0..1. .1..0..0..0..0..1. .0..1..0..0..1..0. .1..1..1..1..0..0
..1..0..1..1..0..1. .0..1..1..1..0..1. .0..1..1..0..1..0. .0..0..0..0..1..0
..1..0..0..1..0..1. .0..0..1..0..1..1. .0..0..1..0..1..0. .0..1..1..1..1..0
..0..1..1..1..1..0. .1..1..0..1..1..0. .1..0..1..0..1..0. .1..0..0..0..0..1
..0..0..0..0..0..0. .1..0..0..0..0..0. .1..1..0..1..0..0. .1..1..1..1..1..1

Crossrefs

Cf. A298259.

Sequence in context: A257928 A206611 A345399 * A298928 A152142 A298085

Adjacent sequences: A298254 A298255 A298256 * A298258 A298259 A298260

Keyword

nonn

Author

R. H. Hardin, Jan 15 2018

Status

approved