Numerators of "Farey fraction" approximations to Pi.

Terms

a(0) =1a(1) =0a(2) =1a(3) =2a(4) =3a(5) =4a(6) =7a(7) =10a(8) =13a(9) =16a(10) =19a(11) =22a(12) =25a(13) =47a(14) =69a(15) =91a(16) =113a(17) =135a(18) =157a(19) =179a(20) =201a(21) =223a(22) =245a(23) =267a(24) =289a(25) =311a(26) =333a(27) =355a(28) =688a(29) =1043