A102668 - OEIS

A102668

Fixed point of the morphism 1 -> 3, 2 -> 1, 3 -> 212, starting with 1.

1, 3, 1, 3, 2, 1, 2, 3, 1, 3, 1, 3, 2, 1, 2, 3, 2, 1, 2, 1, 3, 1, 2, 1, 2, 3, 2, 1, 2, 3, 1, 3, 1, 3, 2, 1, 2, 3, 1, 3, 1, 3, 2, 1, 2, 3, 2, 1, 2, 1, 3, 1, 2, 1, 2, 3, 2, 1, 2, 3, 2, 1, 2, 1, 3, 1, 2, 1, 2, 1, 3, 1, 3, 2, 1, 2, 3, 1, 3, 1, 2, 1, 2, 1, 3, 1, 2, 1, 2, 3, 2, 1, 2, 3, 2, 1, 2, 1, 3, 1, 2, 1, 2, 3, 2

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OFFSET

0,2

COMMENTS

A ternary non-Pisot sequence.

REFERENCES

A. Hof, O. Knill and B. Simon, Singular continuous spectrum for palindromic Schroedinger operators, Commun. Math. Phys. 174 (1995), 149-159.

LINKS

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

Index entries for sequences that are fixed points of mappings

MATHEMATICA

Nest[ Function[l, {Flatten[(l /. {1 -> {3}, 2 -> {1}, 3 -> {2, 1, 2}})]}], {1}, 12] (* Robert G. Wilson v, Feb 04 2005 *)