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%I #7 Jun 18 2022 15:50:17
%S 2,3,5,7,8,9,12,13,11,11,16,19,17,18,21,19,14,13,20,25,23,26,31,29,22,
%T 23,31,34,29,27,30,25,17,15,24,31,29,34,41,39,30,33,45,50,43,41,46,39,
%U 27,28,41,49,44,47,55,50,37,35,46,49,41,36,39,31,20,17,28,37
%N Replace each fraction p/q in Farey tree A007305/A007306 with p+2q.
%D 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 Equals A007305 + 2*A007306.
%Y Cf. A007305, A007306.
%K nonn,easy,tabf
%O 0,1
%A _Gregory V. Richardson_