%I A033492
%S A033492 1,2,8,9,17,20,21,24,112,113,116,119,122,125,128,131,144,145,171,179,
%T A033492 182,183,209,217,238,262,268,276,279,282,308,311,324,340,351,354,375,
%U A033492 383,386,443,449,470,509,525,528,531,557,560,563,584,597,613,665,686
%N A033492 Record number of steps to reach 1 in `3x+1' problem, corresponding to 
               starting values in A006877 (same as A006878 except here we start 
               counting at 1 instead of 0).
%C A033492 Both the 3x+1 steps and the halving steps are counted.
%D A033492 R. E. Maeder, Programming in Mathematica, 3th Edition, Addison-Wesley, 
               pages 251-252.
%H A033492 T. D. Noe, <a href="b033492.txt">Table of n, a(n) for n=1..130</a> (from 
               Eric Roosendaal's data)
%H A033492 <a href="Sindx_3.html#3x1">Index entries for sequences related to 3x+1 
               (or Collatz) problem</a>
%H A033492 Eric Roosendaal, <a href="http://www.ericr.nl/wondrous/delrecs.html">
               3x+1 Delay Records</a>
%Y A033492 Equal to A006878 + 1. Cf. A006884, A006885, A033492.
%Y A033492 Sequence in context: A046679 A004999 A105125 this_sequence A126160 A118962 
               A096033
%Y A033492 Adjacent sequences: A033489 A033490 A033491 this_sequence A033493 A033494 
               A033495
%K A033492 nonn
%O A033492 1,2
%A A033492 Jeff Burch (gburch(AT)erols.com)
%E A033492 Corrected and extended by Lee Corbin (lcorbin(AT)tsoft.com). More terms 
               from Larry Reeves (larryr(AT)acm.org), Apr 27 2001.