login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A316551 Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 4, 7 or 8 king-move adjacent elements, with upper left element zero. 1
21, 127, 129, 430, 1568, 5265, 18978, 73409, 276005, 1055277, 4099795, 16069541, 63171437, 248867713, 983343967, 3892240605, 15417744510, 61119390728, 242448097787, 962127592502, 3818962311133, 15161489223289, 60200972419537 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A316552.

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

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

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

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

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

CROSSREFS

Cf. A316552.

Sequence in context: A303807 A304854 A305251 * A304543 A306128 A316310

Adjacent sequences:  A316548 A316549 A316550 * A316552 A316553 A316554

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 06 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 6 23:36 EDT 2022. Contains 357270 sequences. (Running on oeis4.)