%I A050411
%S A050411 4,1,7,9,2,12,3,15,17,4,20,22,5,25,6,28,30,7,33,8,36,38,9,41,43,10,46,
               11,49,
%T A050411 51,12,54,56,13,59,14,62,64,15,67,16,70,72,17,75,77,18,80,19,83,85,20,
               88,21,
%U A050411 91,93,22,96,98,23,101,24,104,106,25,109,111,26,114,27,117,119,28,122,
               29,125
%N A050411 Analogue of 3x+1 function
%C A050411 Iterates diverge for all n except n>2 in A005248.
%F A050411 f([phi n]) = [phi^2 n]+2; f([phi^2 n]) = n. phi = (1+sqrt(5))/2.
%Y A050411 K. S. Stolarsky, A prelude to the 3x+1 problem, J. Differ. Equations 
               Appl. 4 (1998), no. 5, 451-461.
%Y A050411 Sequence in context: A156558 A082455 A078975 this_sequence A010643 A108906 
               A134250
%Y A050411 Adjacent sequences: A050408 A050409 A050410 this_sequence A050412 A050413 
               A050414
%K A050411 nonn
%O A050411 1,1
%A A050411 David W. Wilson (davidwwilson(AT)comcast.net)