A299320 Number of nX7 0..1 arrays with every element equal to 0, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

1, 22, 434, 1557, 38035, 473924, 7885194, 132676384, 2249698337, 39854864168, 700615705103, 12435929820498, 221099245989227, 3935763610862580, 70136675735762945, 1250168095233297669, 22291499935243883463

Offset

1,2

Comments

Column 7 of A299321.

Links

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

Example

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

Crossrefs

Cf. A299321.

Sequence in context: A183539 A269540 A095219 * A014904 A353105 A036905

Adjacent sequences: A299317 A299318 A299319 * A299321 A299322 A299323

Keyword

nonn

Author

R. H. Hardin, Feb 06 2018

Status

approved