A101662 Fixed point of morphism 0 -> 01, 1 -> 02, 2 -> 21.

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

Mathematica

Nest[ Function[ l, {Flatten[(l /. {0 -> {0, 1}, 1 -> {0, 2}, 2 -> {2, 1}})]}], {0}, 7] (* Robert G. Wilson v, Feb 28 2005 *)

Crossrefs

Sequence in context: A178108 A021501 A237049 * A091064 A275760 A293388

Adjacent sequences: A101659 A101660 A101661 * A101663 A101664 A101665

Keyword

nonn,easy

Author

Ralf Stephan, Dec 11 2004

Status

approved