This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A189257 Number of n X n binary arrays without the pattern 0 0 1 diagonally, antidiagonally or horizontally 1
 2, 16, 280, 8900, 552752, 68635317, 17747766886, 9421503162646, 10606582683139102, 24593238398265693575, 121227430181311808878846, 1234571538047080619811567488, 26705899629138438568650919545084 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A189264 LINKS R. H. Hardin, Table of n, a(n) for n = 1..15 EXAMPLE Some solutions for 3X3 ..0..1..1....1..0..1....1..1..0....1..1..0....1..1..0....1..1..1....0..1..1 ..1..1..0....1..0..1....1..0..1....0..0..0....0..1..1....0..0..0....0..1..1 ..1..1..1....0..1..0....0..1..1....0..0..0....1..0..0....1..1..0....1..1..0 CROSSREFS Sequence in context: A217816 A000182 A009764 * A227674 A102599 A123744 Adjacent sequences:  A189254 A189255 A189256 * A189258 A189259 A189260 KEYWORD nonn AUTHOR R. H. Hardin Apr 19 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified October 16 12:52 EDT 2019. Contains 328060 sequences. (Running on oeis4.)