A283230 Number of nX6 0..1 arrays with no 1 equal to more than two of its horizontal and vertical neighbors, with the exception of exactly two elements.

0, 272, 37869, 2875836, 188295479, 11220964804, 628267302565, 33653819417006, 1744021436949798, 88078351283543288, 4357139001868532313, 211914857494563189810, 10161542392425877668947, 481425219114882399537566

Offset

1,2

Comments

Column 6 of A283232.

Links

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

Example

Some solutions for n=3
..1..1..1..0..1..0. .1..1..1..0..1..1. .0..1..1..0..0..0. .0..1..0..0..0..1
..0..1..1..1..0..0. .0..1..0..0..1..1. .0..1..1..1..0..0. .0..1..0..0..1..1
..0..0..1..0..0..1. .1..0..0..1..0..1. .0..1..1..0..1..1. .1..1..1..0..0..1

Crossrefs

Cf. A283232.

Sequence in context: A035842 A000518 A230531 * A280044 A162009 A283789

Adjacent sequences: A283227 A283228 A283229 * A283231 A283232 A283233

Keyword

nonn

Author

R. H. Hardin, Mar 03 2017

Status

approved