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

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A196699 Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,1,0,4,2 for x=0,1,2,3,4 0
1, 11, 207, 16676, 4114365, 3444722540, 9630587515529, 90075372757265811 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Every 0 is next to 0 3's, every 1 is next to 1 1's, every 2 is next to 2 0's, every 3 is next to 3 4's, every 4 is next to 4 2's
Diagonal of A196707
LINKS
EXAMPLE
Some solutions for n=4
..0..2..0..2....2..0..0..0....2..0..1..0....0..0..0..0....0..2..0..2
..2..1..0..0....0..1..1..0....0..0..1..0....2..0..0..0....0..1..1..0
..0..1..0..1....0..2..0..0....0..0..0..1....2..0..0..0....1..2..0..0
..0..0..0..1....0..1..1..0....1..1..0..1....0..2..2..0....1..0..0..2
CROSSREFS
Sequence in context: A020518 A371387 A196849 * A131216 A034909 A081788
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 05 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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)