A298717 Number of nX6 0..1 arrays with every element equal to 2, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

0, 25, 264, 2246, 34704, 563977, 8287084, 125919136, 1909040369, 29074548954, 442306308211, 6726735527836, 102369187396017, 1557632901882843, 23699769940163807, 360615767570355940, 5487096721395970064

Offset

1,2

Comments

Column 6 of A298719.

Links

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

Example

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

Crossrefs

Cf. A298719.

Sequence in context: A264267 A164756 A221781 * A058482 A114932 A329537

Adjacent sequences: A298714 A298715 A298716 * A298718 A298719 A298720

Keyword

nonn

Author

R. H. Hardin, Jan 25 2018

Status

approved