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!)
A221116 Number of 4Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops 1
0, 0, 51, 3706, 189762, 9107191, 423897591, 19542896293, 896843573267, 41075163197254, 1879441716510988, 85958060741822727, 3930554451621004497, 179712606810281833146, 8216432506372052839604, 375645902985042283582854 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
Row 4 of A221114
LINKS
EXAMPLE
Some solutions for n=3
..0..2..0....0..1..1....0..2..0....0..2..0....0..2..1....0..1..1....0..2..1
..1..2..1....0..3..1....1..1..0....1..2..1....1..3..0....0..3..0....1..3..1
..1..2..0....1..2..0....1..3..1....1..3..1....1..1..0....1..2..1....0..1..0
..1..2..0....1..2..0....1..2..0....0..1..0....1..2..0....1..2..0....1..2..0
CROSSREFS
Sequence in context: A172821 A172868 A015271 * A099397 A093251 A184282
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 02 2013
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 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)