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!)
A197087 Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,2,0,1 for x=0,1,2,3,4 1
1, 26, 422, 5101, 71867, 939690, 12635748, 168802858, 2257145231, 30181119596, 403549336200, 5395982997113, 72149973349274, 964732771720273, 12899599151591706, 172482705147134597, 2306295510150788549 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Every 0 is next to 0 4's, every 1 is next to 1 3's, every 2 is next to 2 2's, every 3 is next to 3 0's, every 4 is next to 4 1's
Column 5 of A197090
LINKS
EXAMPLE
Some solutions for n=4
..2..2..0..0..0....0..3..0..0..0....0..3..0..0..0....0..0..3..0..0
..2..2..0..3..0....0..0..0..0..0....3..0..0..0..0....0..0..0..0..0
..0..0..0..1..0....2..2..0..2..2....0..0..3..3..0....0..3..2..2..0
..0..0..0..0..0....2..2..0..2..2....0..0..0..0..0....0..0..2..2..0
CROSSREFS
Sequence in context: A125483 A229025 A357889 * A028165 A218896 A028131
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 10 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 February 22 13:38 EST 2024. Contains 370256 sequences. (Running on oeis4.)