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!)
A215400 Number of length-n 0..7 arrays connected end-around, with no sequence of L<n elements immediately followed by itself (periodic "squarefree"), and new values introduced in order 0..7. 0
1, 1, 1, 3, 6, 27, 99, 463, 2232, 11839, 66176, 390465, 2394678, 15154985, 98121614, 646053822, 4304919741, 28930077597 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
COMMENTS
Column 7 of A215401.
LINKS
EXAMPLE
Some solutions for n=9:
..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
..1....1....1....1....1....1....1....1....1....1....1....1....1....1....1....1
..2....2....2....2....2....2....2....2....2....0....2....0....2....2....2....2
..1....3....3....0....3....3....3....3....1....2....3....2....3....3....3....0
..3....1....1....3....4....4....4....4....3....1....1....3....1....4....4....3
..2....3....4....4....1....1....1....2....4....2....4....0....3....1....0....1
..1....2....5....3....3....5....5....4....5....3....1....2....4....4....2....3
..2....4....6....2....2....4....0....0....3....1....2....1....0....5....0....4
..4....5....3....1....5....2....2....2....6....2....1....4....5....1....5....1
CROSSREFS
Sequence in context: A083695 A215398 A215399 * A215394 A222625 A060170
KEYWORD
nonn
AUTHOR
R. H. Hardin, Aug 09 2012
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 24 04:07 EST 2024. Contains 370288 sequences. (Running on oeis4.)