%I A049448
%S A049448 1,2,3,4,5,5,7,8,7,6,9,11,10,11,13,12,9,7,11,14,13,15,18,17,13,14,
%T A049448 19,21,18,17,19,16,11,8,13,17,16,19,23,22,17,19,26,29,25,24,27,23,
%U A049448 16,17,25,30,27,29,34,31,23,22,29,31,26,23,25,20,13,9,15,20,19,23
%N A049448 Sum of numerator and denominator of fractions in Farey tree A007305/A007306.
%D A049448 J. C. Lagarias, Number Theory and Dynamical Systems, pp. 35-72 of S. 
               A. Burr, ed., The Unreasonable Effectiveness of Number Theory, Proc. 
               Sympos. Appl. Math., 46 (1992). Amer. Math. Soc.
%F A049448 A007305+A007306.
%Y A049448 Subset of A007306. Cf. A049465-A049468.
%Y A049448 Sequence in context: A086593 A073757 A088468 this_sequence A130044 A156229 
               A082081
%Y A049448 Adjacent sequences: A049445 A049446 A049447 this_sequence A049449 A049450 
               A049451
%K A049448 nonn,easy,nice,tabf
%O A049448 0,2
%A A049448 N. J. A. Sloane (njas(AT)research.att.com), Gregory Richardson (omomom(AT)hotmail.com)