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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A206677 Number of (n+1) X (n+1) 0..2 arrays with every 2 X 3 or 3 X 2 subblock having an unequal number of clockwise and counterclockwise edge increases. 0
 81, 1728, 89022, 7423464, 1533200232, 514286765952, 430502655386142, 585855616489964136, 1994442621051565402650 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A206685. LINKS EXAMPLE Some solutions for n=4: ..1..2..2..2..1....2..1..2..1..2....2..2..2..0..1....0..0..1..0..2 ..2..1..0..2..0....0..1..2..0..1....0..0..1..2..2....2..2..1..1..2 ..2..0..1..1..2....0..0..0..0..2....2..1..0..2..1....0..1..2..0..1 ..1..2..1..0..2....1..2..2..1..0....2..1..2..0..1....1..1..0..2..2 ..0..2..1..2..1....1..1..0..2..2....2..0..1..1..2....2..0..0..1..1 CROSSREFS Sequence in context: A065791 A237503 A268974 * A237091 A253306 A237801 Adjacent sequences:  A206674 A206675 A206676 * A206678 A206679 A206680 KEYWORD nonn AUTHOR R. H. Hardin, Feb 11 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified August 9 15:33 EDT 2022. Contains 356026 sequences. (Running on oeis4.)