%I A037919
%S A037919 4,2,2,2,11,211
%N A037919 Trajectory of 4 under prime factor concatenation procedure.
%H A037919 P. De Geest, <a href="http://www.worldofnumbers.com/topic1.htm">Home 
               Primes</a>
%Y A037919 Cf. A037273.
%Y A037919 Sequence in context: A054575 A129107 A058634 this_sequence A049849 A112349 
               A062072
%Y A037919 Adjacent sequences: A037916 A037917 A037918 this_sequence A037920 A037921 
               A037922
%K A037919 fini,full,nonn,tabl
%O A037919 0,1
%A A037919 Jeff Burch (gburch(AT)erols.com)