The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A183284 Half the number of nX3 binary arrays with the number of 1-1 horizontal, vertical, diagonal and antidiagonal adjacencies equal to the number of 0-0 adjacencies 1
 1, 6, 1, 180, 116, 8016, 9746, 398126, 725872, 20910204, 50854089, 1137666502, 3437745554, 63460798680, 227195157189, 3607654634376, 14790377127600, 208205724243960, 952891467281892, 12165590563428240, 60941926764726246 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Column 3 of A183289 LINKS R. H. Hardin, Table of n, a(n) for n = 1..200 EXAMPLE Some solutions for 4X3 with a(1,1)=0 ..0..1..1....0..0..0....0..1..1....0..0..1....0..0..0....0..1..1....0..1..0 ..0..1..1....1..1..0....1..1..1....1..1..0....0..1..1....0..0..1....1..1..0 ..0..0..1....1..0..1....0..0..0....1..0..1....0..1..1....0..1..0....0..1..0 ..0..0..1....1..0..1....1..0..0....0..0..1....1..0..0....0..1..1....0..0..1 CROSSREFS Sequence in context: A303675 A266302 A352012 * A224476 A123147 A119831 Adjacent sequences: A183281 A183282 A183283 * A183285 A183286 A183287 KEYWORD nonn AUTHOR R. H. Hardin Jan 03 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 May 18 16:47 EDT 2024. Contains 372664 sequences. (Running on oeis4.)