A107338 224 Pisot cubic substitution with characteristic polynomial:x^3-4*x^2+2*x-2.

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

Offset

0,2

Links

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

Formula

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

Mathematica

s[1] = {1, 2, 1, 3, 2, 1}; s[2] = {3}; s[3] = {1, 3}; t[a_] := Flatten[s /@ a]; p[0] = {1}; p[1] = t[p[0]]; p[n_] := t[p[n - 1]] aa = p[4]

Crossrefs

Sequence in context: A304089 A209281 A240554 * A118123 A181743 A330727

Adjacent sequences: A107335 A107336 A107337 * A107339 A107340 A107341

Keyword

nonn,uned

Author

Roger L. Bagula, May 22 2005

Status

approved