%I #3 Mar 30 2012 17:34:15
%S 1,2,3,3,2,1,3,1,1,3,1,2,3,3,2,1,1,1,2,3,3,2,1,1,2,3,3,2,1,1,1,2,3,3,
%T 2,1,3,1,1,3,1,2,3,3,2,1,1,2,3,3,2,1,1,2,3,3,2,1,3,1,1,3,1,2,3,3,2,1,
%U 1,2,3,3,2,1,3,1,1,3,1,2,3,3,2,1,1,2,3,3,2,1,1,2,3,3,2,1,3,1,1,3,1,2,3,3,2
%N 222 Pisot cubic substitution with characteristic polynomial:x^3-2*x^2-2*x-2.
%F 1->{1, 3, 2, 2, 3, 1}, 2->{3}, 3->{1}
%t s[1] = {1, 2, 3, 3, 2, 1}; s[2] = {3}; s[3] = {1}; t[a_] := Flatten[s /@ a]; p[0] = {1}; p[1] = t[p[0]]; p[n_] := t[p[n - 1]] aa = p[4]
%K nonn,uned
%O 0,2
%A _Roger L. Bagula_, May 22 2005