Triangle read by rows: row n gives numerators of Farey series of order n.

Terms

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