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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A297066 Number of n X n 0..1 arrays with no 1 adjacent to 1 king-move neighboring 1. 0
2, 10, 205, 16059, 5651413, 7919440725, 42862620370029, 903073429362722932, 74176314123331508770566, 23719867755601900522061492084, 29525329905069152885550681708955468 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A297073.

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A297073.

Sequence in context: A156510 A246532 A159558 * A320395 A001528 A293148

Adjacent sequences:  A297063 A297064 A297065 * A297067 A297068 A297069

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 24 2017

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 May 18 09:26 EDT 2021. Contains 343995 sequences. (Running on oeis4.)