login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A316647 Number of nX7 0..1 arrays with every element unequal to 1, 2, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero. 1
8, 306, 599, 2432, 54941, 228056, 1396674, 17049299, 106043303, 774609628, 7324990570, 55119909036, 436298131908, 3797205688357, 30881995446060, 254258778361845, 2167620254285320, 18164281808012240, 152495270043730786 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A316648.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A316648.

Sequence in context: A304703 A316454 A305014 * A316175 A317457 A220998

Adjacent sequences:  A316644 A316645 A316646 * A316648 A316649 A316650

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 09 2018

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 21 23:55 EDT 2019. Contains 327286 sequences. (Running on oeis4.)