A299606 Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

8, 1933, 3820, 14888, 62547, 292458, 1284100, 5779019, 26461571, 119048834, 535237156, 2425687653, 10991470354, 49744855107, 225323551043, 1020921422835, 4624691566971, 20953659416364, 94961790268613, 430383835640507

Offset

1,1

Comments

Column 7 of A299607.

Links

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

Example

Some solutions for n=6
..0..1..1..1..0..1..1. .0..1..0..0..1..1..0. .0..1..1..1..0..0..0
..0..1..0..0..0..0..0. .0..1..0..0..1..0..0. .0..1..0..0..0..1..1
..0..1..0..0..0..0..0. .0..0..0..0..0..1..1. .0..1..0..0..0..0..0
..0..0..0..0..0..1..1. .1..0..0..0..0..0..1. .0..0..0..0..0..0..0
..1..0..0..0..1..0..1. .1..0..0..0..1..0..1. .0..1..0..0..0..1..1
..0..1..0..1..0..0..1. .1..1..1..0..0..1..1. .1..0..1..0..1..0..0

Crossrefs

Cf. A299607.

Sequence in context: A297992 A298845 A298652 * A302223 A302669 A302471

Adjacent sequences: A299603 A299604 A299605 * A299607 A299608 A299609

Keyword

nonn

Author

R. H. Hardin, Feb 14 2018

Status

approved