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!)
A207352 Number of n X n 0..2 arrays avoiding the pattern z+1 z+1 z horizontally and z-1 z-1 z vertically 0
3, 81, 12468, 12218660, 76964941511, 3146529377348628, 839863084228054288788, 1460525611014150485510439164 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A207358

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=4

..2..0..2..1....0..2..0..2....2..1..0..2....1..2..2..2....0..2..2..2

..1..1..1..1....2..2..0..2....1..2..2..2....1..2..2..2....1..1..1..2

..0..1..2..0....2..0..2..2....1..0..1..1....1..2..1..1....2..0..1..0

..0..0..0..2....0..2..1..0....0..0..2..0....1..2..1..1....1..2..0..2

CROSSREFS

Sequence in context: A206856 A206951 A206726 * A207983 A207195 A207215

Adjacent sequences:  A207349 A207350 A207351 * A207353 A207354 A207355

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 17 2012

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 May 28 18:24 EDT 2022. Contains 354122 sequences. (Running on oeis4.)