A283384 Number of nX6 0..1 arrays with no 1 equal to more than two of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements.

0, 399, 34531, 1592250, 71707838, 3007934404, 120672330232, 4702791428260, 179057922328623, 6695014133297498, 246668281038206742, 8977573150142192566, 323379332405824735003, 11545468737993581686038, 409038243289396611366132

Offset

1,2

Comments

Column 6 of A283386.

Links

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

Example

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

Crossrefs

Cf. A283386.

Sequence in context: A110885 A249408 A216928 * A140892 A115470 A356821

Adjacent sequences: A283381 A283382 A283383 * A283385 A283386 A283387

Keyword

nonn

Author

R. H. Hardin, Mar 06 2017

Status

approved