A318219 Number of nX5 0..1 arrays with every element unequal to 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

0, 5, 86, 1538, 24576, 407121, 6735734, 111410550, 1842642459, 30476183198, 504057169395, 8336801234195, 137885634658844, 2280544646790670, 37718823498910304, 623846435878664896, 10318041215172685573

Offset

1,2

Comments

Column 5 of A318222.

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..1..0..1..0. .0..1..0..1..0. .0..1..0..1..1
..1..1..0..1..0. .1..0..1..1..1. .1..1..0..0..1. .1..1..0..0..0
..0..0..1..0..1. .0..0..0..0..1. .0..1..0..0..0. .0..1..0..1..0
..1..0..0..1..0. .1..1..0..0..1. .0..1..1..0..1. .1..0..1..1..1
..1..0..1..0..1. .0..1..0..1..0. .1..0..1..1..0. .1..0..0..1..0

Crossrefs

Cf. A318222.

Sequence in context: A222983 A243075 A232489 * A182963 A220617 A231702

Adjacent sequences: A318216 A318217 A318218 * A318220 A318221 A318222

Keyword

nonn

Author

R. H. Hardin, Aug 21 2018

Status

approved