login
This site is supported by donations to The OEIS Foundation.

 

Logo

The submissions stack has been unacceptably high for several months now. Please voluntarily restrict your submissions and please help with the editing. (We don't want to have to impose further limits.)

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A188740 Number of nXn binary arrays without the pattern 1 1 1 diagonally, vertically or antidiagonally 0
2, 16, 292, 17286, 3283906, 1536573216, 2307086087740, 10143499802360135, 123466985032906186049, 4528058434298770108386326, 481947777827695507476795332215, 147455854241909275954639647341005231 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A188747

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Some solutions for 3X3

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

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

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

CROSSREFS

Sequence in context: A223664 A189611 A189689 * A259647 A188985 A009250

Adjacent sequences:  A188737 A188738 A188739 * A188741 A188742 A188743

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 09 2011

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified August 27 19:53 EDT 2015. Contains 261098 sequences.