login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A316447 Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero. 1
8, 928, 10696, 139705, 2520180, 39827783, 621643922, 10080547097, 161747868059, 2585482069092, 41479734342725, 665294366406575, 10663443448097662, 170965273126206457, 2741254377851667993, 43949488375165433197 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A316448.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A316448.

Sequence in context: A304958 A316640 A304696 * A316129 A317435 A241875

Adjacent sequences:  A316444 A316445 A316446 * A316448 A316449 A316450

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 03 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 November 30 06:28 EST 2021. Contains 349419 sequences. (Running on oeis4.)