A298395 Number of nX7 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

8, 99, 473, 7556, 81019, 1142217, 16510708, 212408711, 2962142231, 41270536666, 560430217912, 7730860188892, 106678686242234, 1465614343671238, 20176154652587427, 277797672688399535, 3823158377195653122

Offset

1,1

Comments

Column 7 of A298396.

Links

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

Example

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

Crossrefs

Cf. A298396.

Sequence in context: A298774 A298581 A299573 * A299513 A299313 A300114

Adjacent sequences: A298392 A298393 A298394 * A298396 A298397 A298398

Keyword

nonn

Author

R. H. Hardin, Jan 18 2018

Status

approved