A298769 Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.

8, 2048, 11807, 89295, 754713, 6456802, 53950338, 454801194, 3847185453, 32497437189, 274558538901, 2321648021996, 19629628158181, 165957305627364, 1403226073953134, 11865080326336066, 100325233293376853

Offset

1,1

Comments

Column 7 of A298770.

Links

R. H. Hardin, Table of n, a(n) for n = 1..112

Example

Some solutions for n=4
..0..0..0..1..1..0..0. .0..0..0..0..1..0..1. .0..0..1..0..0..0..1
..0..0..0..1..0..1..0. .1..1..1..0..1..1..0. .0..0..1..0..0..0..1
..0..0..0..1..0..1..1. .1..1..1..0..1..0..1. .0..0..1..0..0..0..1
..0..0..0..1..0..0..1. .1..1..1..0..0..1..0. .0..0..1..0..0..0..1

Crossrefs

Cf. A298770.

Sequence in context: A295217 A297950 A298559 * A299566 A298388 A299306

Adjacent sequences: A298766 A298767 A298768 * A298770 A298771 A298772

Keyword

nonn

Author

R. H. Hardin, Jan 26 2018

Status

approved