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A215328 Smooth Lyndon words with 3 colors. 5
1, 3, 2, 5, 10, 24, 49, 112, 240, 534, 1175, 2626, 5848, 13153, 29594, 66955, 151814, 345494, 788049, 1802675, 4132469, 9495242, 21859912, 50423465, 116511119 (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.

All binary Lyndon words (2 colors, A001037) are necessarily smooth.

LINKS

Table of n, a(n) for n=0..24.

EXAMPLE

(See A215327).

CROSSREFS

Cf. A027376 (Lyndon words, 3 colors), A215327 (smooth necklaces, 3 colors).

Sequence in context: A274761 A100885 A209199 * A107298 A195104 A257905

Adjacent sequences:  A215325 A215326 A215327 * A215329 A215330 A215331

KEYWORD

nonn,more

AUTHOR

Joerg Arndt, Aug 08 2012

STATUS

approved

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Last modified November 15 14:08 EST 2018. Contains 317239 sequences. (Running on oeis4.)