A299674 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

64, 3440, 24742, 398314, 11202963, 231836591, 4670821739, 105367758168, 2312626806147, 49903237571207, 1093149465726227, 23941420834407258, 522411221709363461, 11416996744177960798, 249638866653905808917

Offset

1,1

Comments

Column 7 of A299675.

Links

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

Example

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

Crossrefs

Cf. A299675.

Sequence in context: A299344 A299851 A299007 * A299752 A300266 A283855

Adjacent sequences: A299671 A299672 A299673 * A299675 A299676 A299677

Keyword

nonn

Author

R. H. Hardin, Feb 16 2018

Status

approved