login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual appeal: Please make a donation to keep the OEIS running! Over 6000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A215334 Smooth Lyndon words with 7 colors. 1
1, 7, 6, 17, 42, 119, 305, 829, 2196, 5907, 15863, 42842, 115845, 314368, 854647 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

We call a Lyndon word (x[1],x[2],...,x[n]) smooth if abs(x[k]-x[k-1]) <= 1 for 2<=k<=n.

LINKS

Table of n, a(n) for n=0..14.

EXAMPLE

(See A215333).

CROSSREFS

Cf. A215328 (smooth Lyndon words, 3 colors), A215327 (smooth necklaces, 3 colors).

Sequence in context: A078323 A099255 A198460 * A249114 A275372 A163260

Adjacent sequences:  A215331 A215332 A215333 * A215335 A215336 A215337

KEYWORD

nonn,more

AUTHOR

Joerg Arndt, Aug 08 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 | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified November 18 17:56 EST 2017. Contains 294894 sequences.