A316645 - OEIS

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

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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