A317374 Number of nX6 0..1 arrays with every element unequal to 1, 2, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

5, 1145, 15382, 360940, 9218534, 205048072, 4822465183, 113269475813, 2632551285887, 61549245853900, 1437353385073449, 33549341770653025, 783459380604674480, 18292712871538837327, 427107599362092484477

Offset

1,1

Comments

Column 6 of A317376.

Links

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

Example

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

Crossrefs

Cf. A317376.

Sequence in context: A304595 A316381 A306141 * A189249 A034864 A157642

Adjacent sequences: A317371 A317372 A317373 * A317375 A317376 A317377

Keyword

nonn

Author

R. H. Hardin, Jul 26 2018

Status

approved