Numerators of the partial sums of the reciprocals of the unitary totient function (A047994).

Terms

a(0) =1a(1) =2a(2) =5a(3) =17a(4) =37a(5) =43a(6) =15a(7) =109a(8) =225a(9) =239a(10) =1223a(11) =3809a(12) =1293a(13) =4019a(14) =1031a(15) =209a(16) =1693a(17) =1735a(18) =5261a(19) =5345a(20) =5429a(21) =27649a(22) =306659a(23) =310619a(24) =312929a(25) =317549a(26) =4155857a(27) =4195897a(28) =603091a(29) =615961