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A305021 Number of nX7 0..1 arrays with every element unequal to 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero. 1
0, 702, 10487, 570806, 24498639, 1125868355, 51145342760, 2330913035532, 106184262061654, 4838827075531557, 220480153855823492, 10046790366410275173, 457802551646014275739, 20860807824396398424481 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A305022.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A305022.

Sequence in context: A321641 A304064 A305456 * A316685 A304766 A316510

Adjacent sequences:  A305018 A305019 A305020 * A305022 A305023 A305024

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 23 2018

STATUS

approved

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Last modified July 6 15:30 EDT 2022. Contains 355110 sequences. (Running on oeis4.)