A299587 Number of nX7 0..1 arrays with every element equal to 1, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

0, 240, 117, 4326, 58139, 551191, 12345692, 187346100, 2776620332, 51224230251, 877976797015, 14037996315050, 248132516330900, 4292021929521862, 71306813593798603, 1236450781326731121, 21325562132530541113

Offset

1,2

Comments

Column 7 of A299588.

Links

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

Example

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

Crossrefs

Cf. A299588.

Sequence in context: A015161 A298833 A298621 * A078151 A278179 A100748

Adjacent sequences: A299584 A299585 A299586 * A299588 A299589 A299590

Keyword

nonn

Author

R. H. Hardin, Feb 13 2018

Status

approved