%I A074305
%S A074305 0,3,1,2,7,5,4,11,9,6,15,13,8,19,17,10,23,21,12,27,25,14,31,29,16,35,
%T A074305 33,18,39,37,20,43,41,22,47,45,24,51,49,26,55,53,28,59,57,30,63,61,32,
%U A074305 67,65,34,71,69,36,75,73,38,79,77,40,83,81,42,87,85,44,91,89,46,95,93
%N A074305 a(3m) = 2m, a(3m+1) = 4m+3, a(3m+2) = 4m+1.
%C A074305 A permutation of the nonnegative integers.
%D A074305 G. Venturini, Iterates of number-theoretic functions with periodic rational 
               coefficients (generalization of the 3x+1 problem), Stud. Appl. Math., 
               86 (1992), 185-218.
%H A074305 <a href="Sindx_Per.html#IntegerPermutation">Index entries for sequences 
               that are permutations of the natural numbers</a>
%F A074305 G.f.: x(x^2-x+1)(3x^2+4x+3)/(x^3-1)^2. - Ralf Stephan (ralf(AT)ark.in-berlin.de), 
               Mar 19 2003
%Y A074305 Cf. A074306, A074307, A074308.
%Y A074305 Sequence in context: A024743 A024963 A134348 this_sequence A151855 A135338 
               A084602
%Y A074305 Adjacent sequences: A074302 A074303 A074304 this_sequence A074306 A074307 
               A074308
%K A074305 nonn,easy
%O A074305 0,2
%A A074305 N. J. A. Sloane (njas(AT)research.att.com), Sep 23 2002
%E A074305 More terms from Ralf Stephan (ralf(AT)ark.in-berlin.de), Mar 19 2003