%I #4 Jan 17 2013 13:38:40
%S 1,2,4,8,16,32,33,64,66,128,129,132,133,256,258,264,266,512,513,516,
%T 528,529,532,1024,1026,1032,1056,1058,1064,2048,2049,2052,2064,2112,
%U 2113,2116,2128,4096,4098,4104,4105,4128,4224,4226,4232,4233,4256,8192,8193
%N The Collatz (3x+1) iteration in A220145 sorted and converted to decimal.
%C Sequence A005186 tells how many of these numbers are in [2^n, 2^(n+1)-1].
%K nonn,base
%O 1,2
%A _T. D. Noe_, Jan 17 2013