A281986 Number of nX6 0..1 arrays with no element unequal to more than four of its king-move neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

0, 432, 41118, 659508, 8777256, 104671608, 1170765416, 12655050072, 133501129836, 1383406166720, 14149729001202, 143201257594468, 1437150395302274, 14322185435363036, 141890542445419910

Offset

1,2

Comments

Column 6 of A281988.

Links

R. H. Hardin, Table of n, a(n) for n = 1..144

Example

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

Crossrefs

Cf. A281988.

Sequence in context: A232905 A282752 A290180 * A299861 A269149 A113921

Adjacent sequences: A281983 A281984 A281985 * A281987 A281988 A281989

Keyword

nonn

Author

R. H. Hardin, Feb 04 2017

Status

approved