Numerators of the squarefree totient analogs of the harmonic numbers F_n.

Terms

a(0) =1a(1) =2a(2) =5a(3) =5a(4) =11a(5) =13a(6) =41a(7) =41a(8) =41a(9) =11a(10) =113a(11) =113a(12) =77a(13) =241a(14) =497a(15) =497a(16) =1009a(17) =1009a(18) =3067a(19) =3067a(20) =3127a(21) =3199a(22) =35549a(23) =35549a(24) =35549a(25) =36209a(26) =36209a(27) =36209a(28) =255443a(29) =262373