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A317956 Apply the morphism X -> XYX, where Y=1 if X contains an odd number of 1's, otherwise Y = 2  n times to 1, and concatenate the resulting string. 2
1, 121, 1211121, 121112121211121, 1211121212111211121112121211121, 121112121211121112111212121112121211121212111211121112121211121 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

Karamanos, Kostas. "From symbolic dynamics to a digital approach." International Journal of Bifurcation and Chaos 11.06 (2001): 1683-1694. (Full version. See p. 1685)

Karamanos, K. (2000). From symbolic dynamics to a digital approach: chaos and transcendence. In Michel Planat (Ed.), Noise, Oscillators and Algebraic Randomness (Lecture Notes in Physics, pp. 357-371). Springer, Berlin, Heidelberg. (Short version. See p. 359)

LINKS

Table of n, a(n) for n=0..5.

CROSSREFS

The limit of the terms is A056832.

A317957 is the same sequence over the alphabet {1,0}.

Sequence in context: A221392 A227301 A261364 * A136094 A317197 A082215

Adjacent sequences:  A317953 A317954 A317955 * A317957 A317958 A317959

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Aug 22 2018

STATUS

approved

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Last modified August 14 01:00 EDT 2020. Contains 336473 sequences. (Running on oeis4.)