A316646 - OEIS

A316646

Number of nX6 0..1 arrays with every element unequal to 1, 2, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

5, 165, 247, 954, 13869, 43604, 228056, 1976020, 9093873, 51610410, 361362973, 1985497197, 11760202787, 75909662200, 448886626784, 2721480635319, 17080156724712, 103985805258335, 638132195692524, 3970731506103798

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OFFSET

1,1

COMMENTS

Column 6 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..0..1..0. .0..1..1..0..1..0. .0..1..1..0..0..1

..0..0..0..1..1..0. .0..0..0..0..0..1. .0..1..1..0..1..0. .0..0..0..0..1..0

..0..0..0..0..0..0. .0..0..0..0..0..0. .1..1..1..1..1..1. .0..0..0..0..0..0

..0..1..0..0..0..0. .0..1..0..0..1..0. .1..1..1..0..1..0. .0..1..1..0..0..0

..1..0..0..0..1..0. .0..0..0..0..0..0. .1..0..1..1..1..1. .0..0..0..0..1..1

CROSSREFS

Cf. A316648.

Sequence in context: A304702 A316453 A305013 * A316174 A317456 A203185

Adjacent sequences: A316643 A316644 A316645 * A316647 A316648 A316649

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 09 2018

STATUS

approved