%I #3 Mar 30 2012 16:47:26
%S 1,12,6,3,34,17,188,94,47,518,259,2850,1425,15676,7838,3919,43110,
%T 21555,237106,118553,1304084,652042,326021,3586232,1793116,896558,
%U 448279,4931070,2465535,27120886,13560443
%N Trajectory of 1 under map n->11n+1 if n odd, n->n/2 if n even
%K nonn
%O 0,2
%A _N. J. A. Sloane_.