login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A206744 Number of (n+1)X(n+1) 0..3 arrays with every 2X3 or 3X2 subblock having an equal number of clockwise and anticlockwise edge increases 0
256, 36384, 43894936, 343128343904, 16261882009570952, 4664832957577714246616 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A206752

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for n=4

..0..0..0..0..1....2..2..3..0..3....0..0..3..0..0....1..0..0..0..0

..0..1..0..3..0....3..2..2..3..0....1..1..0..3..3....3..1..0..1..0

..2..3..1..0..0....1..3..2..3..3....3..3..1..0..3....1..3..1..3..1

..2..2..3..2..0....1..3..3..3..0....1..1..3..1..0....1..1..3..0..2

..0..0..1..3..2....3..2..2..2..3....0..1..1..2..1....0..0..1..2..0

CROSSREFS

Sequence in context: A206101 A221091 A205458 * A207791 A018798 A017320

Adjacent sequences:  A206741 A206742 A206743 * A206745 A206746 A206747

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 12 2012

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified November 28 21:04 EST 2014. Contains 250406 sequences.