A106698 - OEIS

A106698

Three-symbol substitution: characteristic polynomial: x^3-x^2-3*x-3.

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

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

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

FORMULA

1->{2, 3}, 2->{1, 2, 1}, 3->{2, 1, 2}

MATHEMATICA

s[1] = {2, 3}; s[2] = {1, 2, 1}; s[3] = {2, 1, 2}; t[a_] := Flatten[s /@ a]; p[0] = {1}; p[1] = t[p[0]]; p[n_] := t[p[n - 1]] aa = p[6]

CROSSREFS

Sequence in context: A058506 A325509 A324117 * A097848 A308964 A124830

Adjacent sequences: A106695 A106696 A106697 * A106699 A106700 A106701

KEYWORD

nonn,uned

AUTHOR

Roger L. Bagula, May 13 2005

STATUS

approved