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!)
A197430 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,1,1,1 for x=0,1,2,3,4 1
25, 2107, 55567, 4017895, 195632425, 9869104795, 529968166606, 27927270266251, 1461399711177586, 76357681634837889, 4016048479413867754, 210995429397329769859, 11066069030221109085243, 581180575552246936955138 (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 0's, every 2 is next to 2 1's, every 3 is next to 3 1's, every 4 is next to 4 1's
Column 7 of A197431
LINKS
EXAMPLE
Some solutions containing all values 0 to 4 for n=4
..0..0..1..2..0..0..0....0..0..0..1..3..1..0....0..0..1..1..0..1..1
..0..2..1..1..3..1..2....0..2..1..4..1..1..1....0..0..1..4..1..2..0
..1..1..0..0..1..4..1....1..1..4..1..0..0..1....1..1..3..1..1..0..0
..2..1..0..0..1..1..0....1..0..1..1..0..0..1....2..1..0..0..1..2..1
CROSSREFS
Sequence in context: A173948 A279276 A197408 * A195272 A266130 A363192
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 14 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 May 22 17:00 EDT 2024. Contains 372758 sequences. (Running on oeis4.)