A304017 Number of nX6 0..1 arrays with every element unequal to 1, 2, 3 or 5 king-move adjacent elements, with upper left element zero.

5, 333, 826, 4449, 20979, 99733, 488944, 2363993, 11464178, 56098491, 273654206, 1336283114, 6536299537, 31957080257, 156295422858, 764631810784, 3740564822969, 18300635921142, 89539797920356, 438096333608801

Offset

1,1

Comments

Column 6 of A304019.

Links

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

Example

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

Crossrefs

Cf. A304019.

Sequence in context: A085523 A292687 A152425 * A305365 A304957 A316639

Adjacent sequences: A304014 A304015 A304016 * A304018 A304019 A304020

Keyword

nonn

Author

R. H. Hardin, May 04 2018

Status

approved