%I A008902
%S A008902 99,296,148,74,37,110,55,164,82,41,122,61,182,91,272,136,
%T A008902 68,34,17,50,25,74,37,110,55,164,82,41,122,61,182,91,272,
%U A008902 136,68,34,17,50,25,74,37,110,55,164,82,41,122,61,182,91
%N A008902 x->x/2 if x even, x->3x-1 if x odd.
%D A008902 R. K. Guy, Unsolved Problems in Number Theory, E16.
%Y A008902 Sequence in context: A044431 A044812 A125820 this_sequence A008882 A156757 
               A027579
%Y A008902 Adjacent sequences: A008899 A008900 A008901 this_sequence A008903 A008904 
               A008905
%K A008902 nonn
%O A008902 0,1
%A A008902 N. J. A. Sloane (njas(AT)research.att.com).