A300922 Number of nX7 0..1 arrays with every element equal to 0, 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

1, 304, 5160, 224767, 8265835, 340365586, 13715723327, 560932609225, 22881004568048, 935477482098150, 38230695664365356, 1562893013715392478, 63887739349054144930, 2611714583994197727657, 106765154994098448490632

Offset

1,2

Comments

Column 7 of A300923.

Links

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

Example

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

Crossrefs

Cf. A300923.

Sequence in context: A187934 A300538 A300965 * A301530 A172228 A281329

Adjacent sequences: A300919 A300920 A300921 * A300923 A300924 A300925

Keyword

nonn

Author

R. H. Hardin, Mar 15 2018

Status

approved