A281162 Number of n X 5 0..1 arrays with no element equal to more than three of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

0, 85, 3237, 27229, 163762, 865821, 4098895, 18213313, 76987169, 312665502, 1230221726, 4717647935, 17711793715, 65341972674, 237540919189, 852805158008, 3028838128471, 10656713673211, 37186870963633, 128821858880480

Offset

1,2

Comments

Column 5 of A281165.

Links

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

Example

Some solutions for n=4
..0..1..1..1..0. .0..0..0..0..0. .0..0..1..0..0. .0..0..0..1..1
..0..1..0..1..0. .1..1..0..1..1. .1..1..1..0..0. .1..0..1..0..1
..1..0..0..1..0. .0..1..1..0..1. .0..0..0..1..0. .1..0..1..0..1
..1..1..0..1..0. .1..0..0..0..1. .0..1..1..0..1. .0..0..0..1..1

Crossrefs

Cf. A281165.

Sequence in context: A220736 A157110 A076463 * A339198 A017801 A201799

Adjacent sequences: A281159 A281160 A281161 * A281163 A281164 A281165

Keyword

nonn

Author

R. H. Hardin, Jan 16 2017

Status

approved