login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A285403 1-limiting word of the morphism 0->11, 1-> 001. 6
1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1

COMMENTS

The morphism 0->11, 1-> 001 has two limiting words.  If the number of iterations is even, the 0-word evolves from 0 -> 11 -> 001001 -> 11110011111001 ->

00100100100111110010010010010011111001; if the number of iterations is odd, the 1-word evolves from 0 -> 11 -> 001001 -> 11110011111001 , as in A285403.

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..10000

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {1, 1}, 1 -> {0, 0, 1}}] &, {0}, 11] (* A285403 *)

Flatten[Position[s, 0]]  (* A285404 *)

Flatten[Position[s, 1]]  (* A285405 *)

CROSSREFS

Cf. A285401, A285404, A285405.

Sequence in context: A166446 A103368 A055132 * A183918 A128408 A121802

Adjacent sequences:  A285400 A285401 A285402 * A285404 A285405 A285406

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Apr 27 2017

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 27 06:36 EST 2020. Contains 332299 sequences. (Running on oeis4.)