A316645 Number of nX5 0..1 arrays with every element unequal to 1, 2, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

3, 51, 117, 277, 3988, 13869, 54941, 427096, 1946889, 9366796, 57663268, 295969544, 1539763069, 8765786966, 47008512064, 252662845220, 1403048644300, 7643576472481, 41637425213850, 229520211886381, 1257575861723627

Offset

1,1

Comments

Column 5 of A316648.

Links

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

Example

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

Crossrefs

Cf. A316648.

Sequence in context: A062216 A305012 A316173 * A116630 A317455 A045489

Adjacent sequences: A316642 A316643 A316644 * A316646 A316647 A316648

Keyword

nonn

Author

R. H. Hardin, Jul 09 2018

Status

approved