A304345 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.

32, 284, 613, 4733, 27505, 135445, 741942, 4355191, 24554331, 139375272, 804302231, 4642202166, 26767954210, 154996276426, 898640317819, 5213503303962, 30283849252967, 176049152408097, 1024019896746808

Offset

1,1

Comments

Column 6 of A304347.

Links

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

Example

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

Crossrefs

Cf. A304347.

Sequence in context: A223904 A122103 A009526 * A316216 A305640 A317034

Adjacent sequences: A304342 A304343 A304344 * A304346 A304347 A304348

Keyword

nonn

Author

R. H. Hardin, May 11 2018

Status

approved