A304056 Number of nX6 0..1 arrays with every element unequal to 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.

5, 165, 60, 427, 1641, 3434, 13624, 69126, 260517, 1102813, 5505522, 26118011, 119187870, 598862144, 2969266285, 14210413187, 71450044070, 357152196394, 1748126910838, 8785168669520, 43952589152798, 217501253798963

Offset

1,1

Comments

Column 6 of A304058.

Links

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

Example

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

Crossrefs

Cf. A304058.

Sequence in context: A197095 A364117 A247468 * A305450 A304702 A316453

Adjacent sequences: A304053 A304054 A304055 * A304057 A304058 A304059

Keyword

nonn

Author

R. H. Hardin, May 05 2018

Status

approved