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!)
A305224 Number of n X n 0..1 arrays with every element unequal to 0, 1, 2, 3 or 8 king-move adjacent elements, with upper left element zero. 0
1, 8, 24, 116, 757, 7062, 135183, 4217359, 251711366, 26201772355, 5004642648682, 1701933414189511, 1046175213710985327, 1152072797809868185976, 2282648962854010752666780, 8117018772747629068352653449 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A305230.

LINKS

Table of n, a(n) for n=1..16.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A305230.

Sequence in context: A220706 A246030 A010566 * A182068 A092771 A279483

Adjacent sequences:  A305221 A305222 A305223 * A305225 A305226 A305227

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 27 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 September 24 23:43 EDT 2022. Contains 356951 sequences. (Running on oeis4.)