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!)
A206569 Number of n X n 0..3 arrays avoiding the pattern z-1 z-1 z in any row, column or nw-to-se diagonal 0
4, 256, 188699, 1665431164, 176372042982658, 224922074723556223280 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A206577

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for n=4

..0..2..2..1....1..1..1..3....0..1..0..3....3..1..1..3....1..0..2..3

..1..0..1..1....3..3..2..0....2..2..1..2....0..1..0..0....2..1..1..0

..2..2..2..0....0..2..1..1....1..1..3..3....0..0..3..0....3..3..0..1

..0..3..0..0....3..1..0..0....0..3..3..0....2..1..2..0....0..0..3..2

CROSSREFS

Sequence in context: A206968 A206789 A206961 * A207576 A209086 A207051

Adjacent sequences:  A206566 A206567 A206568 * A206570 A206571 A206572

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 09 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 21 22:08 EST 2022. Contains 350480 sequences. (Running on oeis4.)