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.
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!)
A196971 Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,0,2,1 for x=0,1,2,3,4 1
5, 57, 386, 3675, 31899, 260394, 2246059, 19246379, 164006734, 1400773245, 11965906663, 102191052974, 872793094884, 7454220149765, 63663510400324, 543728417138307, 4643793942698920, 39660975017361508, 338730301259452052 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Every 0 is next to 0 4's, every 1 is next to 1 3's, every 2 is next to 2 0's, every 3 is next to 3 2's, every 4 is next to 4 1's
Column 5 of A196974
LINKS
EXAMPLE
Some solutions for n=4
..2..0..0..0..2....2..0..0..0..0....0..2..0..0..0....0..0..0..0..2
..0..0..2..2..0....0..2..2..0..0....0..2..0..2..2....0..0..2..2..0
..0..0..2..2..0....2..3..2..0..0....0..3..2..3..0....2..2..1..3..2
..0..0..0..0..2....0..1..0..0..2....0..2..0..2..0....0..0..0..2..0
CROSSREFS
Sequence in context: A196319 A197304 A000362 * A197558 A218658 A266278
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 08 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 June 15 16:12 EDT 2024. Contains 373407 sequences. (Running on oeis4.)