%I A039502
%S A039502 17,21,23,25,31,33,34,37,41,42,45,46,49,50,55,61,62,66,67,68,73,74,82,
%T A039502 83,84,90,91,92,98,99,100,109,110,111,117,122,123,124,131,132,134,136,
%U A039502 146,147,148,153,163,164,165,166,168,175,179,180,182,184,185,195,196
%N A039502 Iterations of "n->n/2 if n even, n->3n-1 if n odd" (A001281) starting 
               at these numbers reach 17.
%Y A039502 Cf. A037084, A039500-A039505.
%Y A039502 Sequence in context: A045020 A069961 A140146 this_sequence A039505 A166875 
               A128546
%Y A039502 Adjacent sequences: A039499 A039500 A039501 this_sequence A039503 A039504 
               A039505
%K A039502 nonn,easy
%O A039502 1,1
%A A039502 Christian G. Bower (bowerc(AT)usa.net), Feb 15 1999.