A299247 Number of nX6 0..1 arrays with every element equal to 0, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

1, 65, 87, 652, 5042, 35320, 223750, 1634125, 12440063, 85743693, 626402775, 4593707989, 33301518925, 242065110566, 1767254828555, 12896269372285, 93959680164405, 685715068810035, 5004838983561794, 36516480551676091

Offset

1,2

Comments

Column 6 of A299249.

Links

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

Example

Some solutions for n=5
..0..0..1..1..1..0. .0..1..1..1..0..0. .0..1..1..0..1..1. .0..1..0..1..1..0
..1..0..0..1..0..0. .1..1..0..0..1..0. .0..0..1..1..1..0. .0..0..0..0..1..1
..1..1..1..1..1..0. .1..0..1..0..1..1. .0..1..1..1..1..1. .1..0..0..1..1..0
..1..0..1..1..1..1. .1..0..1..0..1..0. .1..1..1..1..0..1. .1..1..0..0..1..1
..0..0..1..0..1..0. .1..1..0..1..1..1. .1..0..1..0..0..0. .1..0..0..1..1..0

Crossrefs

Cf. A299249.

Sequence in context: A020273 A034071 A298380 * A015788 A072053 A336331

Adjacent sequences: A299244 A299245 A299246 * A299248 A299249 A299250

Keyword

nonn

Author

R. H. Hardin, Feb 05 2018

Status

approved