A320407 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

32, 257, 1970, 18725, 191615, 1957026, 19677729, 199877194, 2025592349, 20591906814, 209152278873, 2125269466703, 21596517936302, 219473499133689, 2230457205782323, 22667637795146693, 230368898318395100

Offset

1,1

Comments

Column 6 of A320409.

Links

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

Example

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

Crossrefs

Cf. A320409.

Sequence in context: A357788 A022327 A318022 * A189651 A145711 A125369

Adjacent sequences: A320404 A320405 A320406 * A320408 A320409 A320410

Keyword

nonn

Author

R. H. Hardin, Oct 12 2018

Status

approved