A215334 Smooth Lyndon words with 7 colors.

1, 7, 6, 17, 42, 119, 305, 829, 2196, 5907, 15863, 42842, 115845, 314368, 854647, 2329087, 6358855, 17393327, 47652117, 130752969, 359270784, 988458115, 2722792878

Offset: 0

Author

Joerg Arndt, Aug 08 2012

Keywords

• nonn
• more

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.

Examples

			(See A215333).
		

Crossrefs

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

Extensions

More terms from Joerg Arndt, Jun 17 2019