The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A189335 Number of n X n binary arrays without the pattern 1 0 0 1 diagonally, vertically, antidiagonally or horizontally 0
 2, 16, 512, 36626, 6814820, 2650369322, 2739456017053, 6190300153637745 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A189343 LINKS Table of n, a(n) for n=1..8. EXAMPLE Some solutions for 4X4 ..0..1..0..0....0..1..0..0....1..1..1..1....0..1..0..1....1..1..0..0 ..0..0..0..0....1..0..0..0....0..0..1..1....0..1..0..1....1..0..0..0 ..0..1..1..0....1..0..0..0....0..0..0..0....0..1..0..1....1..1..1..0 ..0..1..0..0....1..0..1..0....0..0..0..0....1..0..1..0....0..1..1..1 CROSSREFS Sequence in context: A009710 A012393 A189899 * A189773 A189152 A265015 Adjacent sequences: A189332 A189333 A189334 * A189336 A189337 A189338 KEYWORD nonn AUTHOR R. H. Hardin Apr 20 2011 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.

Last modified September 22 10:36 EDT 2023. Contains 365520 sequences. (Running on oeis4.)