A298928 Number of nX6 0..1 arrays with every element equal to 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

0, 13, 7, 72, 255, 955, 3569, 15031, 61046, 253624, 1067751, 4492809, 18851449, 79305038, 333393642, 1401954916, 5897152044, 24806594547, 104353275618, 439007735235, 1846879331358, 7769846838226, 32688195410797, 137521855214717

Offset

1,2

Comments

Column 6 of A298930.

Links

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

Example

Some solutions for n=5
..0..0..0..0..1..1. .0..0..0..1..1..1. .0..0..1..1..1..1. .0..0..0..0..0..0
..0..0..0..0..1..1. .0..0..0..1..1..1. .0..1..0..0..0..1. .0..0..0..0..0..0
..0..0..0..0..1..1. .0..0..0..1..1..1. .1..0..0..0..0..1. .0..0..0..0..0..0
..0..0..0..0..1..1. .0..0..0..1..1..1. .1..0..0..0..0..1. .0..0..0..0..0..0
..0..0..0..0..1..1. .0..0..0..1..1..1. .1..1..1..1..1..1. .0..0..0..0..0..0

Crossrefs

Cf. A298930.

Sequence in context: A206611 A345399 A298257 * A152142 A298085 A177427

Adjacent sequences: A298925 A298926 A298927 * A298929 A298930 A298931

Keyword

nonn

Author

R. H. Hardin, Jan 29 2018

Status

approved