Denominators of Farey tree fractions (i.e., the Stern-Brocot subtree in the range [0,1]).

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =3a(5) =4a(6) =5a(7) =5a(8) =4a(9) =5a(10) =7a(11) =8a(12) =7a(13) =7a(14) =8a(15) =7a(16) =5a(17) =6a(18) =9a(19) =11a(20) =10a(21) =11a(22) =13a(23) =12a(24) =9a(25) =9a(26) =12a(27) =13a(28) =11a(29) =10