Fluctuations of the number of cubefree integers not exceeding 10^n.

Terms

a(0) =0a(1) =1a(2) =2a(3) =1a(4) =0a(5) =-1a(6) =3a(7) =7a(8) =-10a(9) =-1a(10) =-7a(11) =-14a(12) =-59a(13) =21a(14) =34a(15) =-15a(16) =103a(17) =-104a(18) =302a(19) =-38a(20) =-514a(21) =-290a(22) =1130a(23) =504a(24) =2466a(25) =6813a(26) =-1854a(27) =1590a(28) =-4879a(29) =3963