A320362 Number of nX6 0..1 arrays with every element unequal to 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

0, 16, 258, 4563, 91711, 1752652, 33825987, 653183942, 12600432002, 243080087186, 4689839536009, 90482737755713, 1745684561683732, 33679631409545263, 649784599619041645, 12536354917749688506, 241865054799427771058

Offset

1,2

Comments

Column 6 of A320364.

Links

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

Example

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

Crossrefs

Cf. A320364.

Sequence in context: A041113 A363689 A041482 * A220742 A266023 A223623

Adjacent sequences: A320359 A320360 A320361 * A320363 A320364 A320365

Keyword

nonn

Author

R. H. Hardin, Oct 11 2018

Status

approved