This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A208835 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 1 and 1 1 0 vertically 1
 2, 16, 78, 855, 8736, 272206, 6206445, 613538688, 30091441770, 9949962265465, 995860712362464, 1146808937112275178, 223896318271083352427, 927305041435819383020944, 341298409330345173624970966 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A208840 LINKS R. H. Hardin, Table of n, a(n) for n = 1..37 EXAMPLE Some solutions for n=4 ..1..1..1..1....0..1..0..1....1..0..1..0....0..1..1..0....1..0..1..1 ..0..1..0..1....1..0..1..0....1..1..0..0....0..1..1..1....0..1..1..0 ..1..1..1..1....0..1..0..1....1..0..1..0....1..1..1..0....1..0..1..1 ..0..1..0..1....1..0..1..0....1..1..0..1....0..1..1..1....0..1..1..0 CROSSREFS Sequence in context: A244717 A208102 A207723 * A208683 A197992 A265173 Adjacent sequences:  A208832 A208833 A208834 * A208836 A208837 A208838 KEYWORD nonn AUTHOR R. H. Hardin Mar 01 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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified November 12 19:19 EST 2018. Contains 317116 sequences. (Running on oeis4.)