%I A037108
%S A037108 3,64,32,16,8,4,2,1,22,11,232,116,58,29,610,305,6406,3203,
%T A037108 67264,33632,16816,8408,4204,2102,1051,22072,11036,5518,
%U A037108 2759,57940,28970,14485,304186,152093,3193954,1596977,33536518
%N A037108 Trajectory of 3 under map n->21n+1 if n odd, n->n/2 if n even
%Y A037108 Sequence in context: A159605 A156904 A053857 this_sequence A092901 A105459 
               A099338
%Y A037108 Adjacent sequences: A037105 A037106 A037107 this_sequence A037109 A037110 
               A037111
%K A037108 nonn
%O A037108 0,1
%A A037108 N. J. A. Sloane (njas(AT)research.att.com).