A317962 To get a(n), apply the morphism 1 -> 1121, 2-> 2 n times to 1.

1, 1121, 1121112121121, 1121112121121112111212112121121112121121, 1121112121121112111212112121121112121121112111212112111211121211212112111212112121121112121121112111212112121121112121121

Offset

1,2

Comments

These are stages in the growth of the Chacon sequence over the alphabet {1,2}. See A049320 for further information and references.

Links

Seiichi Manyama, Table of n, a(n) for n = 1..6

Example

Over the more usual alphabet {0,1} these strings would be:
0
0010
0010001010010
0010001010010001000101001010010001010010
0010001010010001000101001010010001010010001000101001000100010100101001000101001010010001010010001000101001010010001010010
...

Crossrefs

Cf. A003462, A049320, A133162.

Sequence in context: A207227 A207014 A203189 * A334963 A327431 A157444

Adjacent sequences: A317959 A317960 A317961 * A317963 A317964 A317965

Keyword

nonn

Author

N. J. A. Sloane, Aug 24 2018

Extensions

Offset 1 by Seiichi Manyama, Aug 24 2018

Status

approved