A298652 Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.

8, 1933, 3820, 14888, 62544, 291784, 1277500, 5758443, 26328879, 118276552, 531491667, 2406395782, 10892034473, 49246533056, 222848686116, 1008667256385, 4564536675139, 20660407068626, 93538032416560, 423503341613182

Offset

1,1

Comments

Column 7 of A298653.

Links

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

Example

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

Crossrefs

Cf. A298653.

Sequence in context: A297822 A297992 A298845 * A299606 A302223 A302669

Adjacent sequences: A298649 A298650 A298651 * A298653 A298654 A298655

Keyword

nonn

Author

R. H. Hardin, Jan 24 2018

Status

approved