Denominators of the partial sums of the reciprocals of the powerfree part function (A055231).

Terms

a(0) =1a(1) =2a(2) =6a(3) =6a(4) =30a(5) =5a(6) =35a(7) =35a(8) =35a(9) =70a(10) =770a(11) =2310a(12) =30030a(13) =15015a(14) =5005a(15) =5005a(16) =85085a(17) =170170a(18) =3233230a(19) =3233230a(20) =9699690a(21) =4849845a(22) =111546435a(23) =111546435a(24) =111546435a(25) =223092870a(26) =223092870a(27) =223092870a(28) =6469693230a(29) =1078282205