A316685 - OEIS

A316685

Number of nX7 0..1 arrays with every element unequal to 2, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

0, 702, 10487, 570806, 24891152, 1155724711, 53245963290, 2457712512055, 113464874364839, 5239113289126198, 241898389551869436, 11169440128316212241, 515732336978881669820, 23813298292443451483430

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OFFSET

1,2

COMMENTS

Column 7 of A316686.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A316686.

Sequence in context: A304064 A305456 A305021 * A304766 A316510 A317464

Adjacent sequences: A316682 A316683 A316684 * A316686 A316687 A316688

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 10 2018

STATUS

approved