OFFSET
1,3
COMMENTS
This is the fixed point of the morphism 0->012, 1->210, 2->102 starting with 0. Let u be the (nonperiodic) sequence of positions of 0, and likewise, v for 1 and w for 2; then u(n)/n -> 3, v(n)/n -> 3, w(n)/n -> 3.
See A287385 for a guide to related sequences.
LINKS
EXAMPLE
First three iterations of the morphism: 012, 012210021, 012210021021210012012021210.
MATHEMATICA
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, May 25 2017
STATUS
approved