A101660 Fixed point of morphism 0 -> 01, 1 -> 02, 2 -> 12.

0, 1, 0, 2, 0, 1, 1, 2, 0, 1, 0, 2, 0, 2, 1, 2, 0, 1, 0, 2, 0, 1, 1, 2, 0, 1, 1, 2, 0, 2, 1, 2, 0, 1, 0, 2, 0, 1, 1, 2, 0, 1, 0, 2, 0, 2, 1, 2, 0, 1, 0, 2, 0, 2, 1, 2, 0, 1, 1, 2, 0, 2, 1, 2, 0, 1, 0, 2, 0, 1, 1, 2, 0, 1, 0, 2, 0, 2, 1, 2, 0, 1, 0, 2, 0, 1, 1, 2, 0, 1, 1, 2, 0, 2, 1, 2, 0, 1, 0, 2, 0, 1, 1, 2, 0

Offset

0,4

Links

Table of n, a(n) for n=0..104.

Index entries for sequences that are fixed points of mappings

Formula

a(2n) = [a(n)==2], a(2n+1) = 1 + [a(n)>0].

Mathematica

Nest[ Function[ l, {Flatten[(l /. {0 -> {0, 1}, 1 -> {0, 2}, 2 -> {1, 2}})]}], {0}, 7] (* Robert G. Wilson v, Feb 26 2005 *)

Crossrefs

Sequence in context: A180793 A352523 A116948 * A276771 A062984 A105243

Adjacent sequences: A101657 A101658 A101659 * A101661 A101662 A101663

Keyword

nonn,easy

Author

Ralf Stephan, Dec 11 2004

Status

approved