A297875 Number of n X 7 0..1 arrays with every element equal to 2, 3 or 5 king-move adjacent elements, with upper left element zero.

0, 34, 6, 185, 579, 3307, 13778, 69160, 325394, 1617897, 7900112, 39099845, 191624353, 944384511, 4643953567, 22870757049, 112585762631, 554562217248, 2730604865872, 13448526185881, 66230043593237, 326180992906896

Offset

1,2

Comments

Column 7 of A297876.

Links

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

Example

Some solutions for n=7
..0..0..0..0..1..0..0. .0..0..0..0..0..1..1. .0..0..0..1..1..1..0
..0..1..1..1..0..1..0. .0..1..1..1..0..0..1. .0..1..1..0..1..0..0
..1..1..0..0..1..1..0. .1..0..0..0..1..0..1. .1..0..0..1..0..1..1
..1..0..1..1..0..1..0. .1..0..1..1..0..1..1. .1..1..0..1..0..1..0
..1..0..1..0..0..1..0. .1..0..1..1..1..0..1. .0..0..0..0..1..0..0
..1..0..0..1..1..0..1. .0..1..0..1..0..1..0. .1..0..0..1..0..0..1
..1..1..0..0..0..1..1. .0..0..1..0..1..0..0. .1..1..0..1..1..1..1

Crossrefs

Cf. A297876.

Sequence in context: A269482 A037933 A350936 * A298138 A350935 A350132

Adjacent sequences: A297872 A297873 A297874 * A297876 A297877 A297878

Keyword

nonn

Author

R. H. Hardin, Jan 07 2018

Status

approved