Sum of the 8th powers of the squarefree divisors of n.

Terms

a(0) =1a(1) =257a(2) =6562a(3) =257a(4) =390626a(5) =1686434a(6) =5764802a(7) =257a(8) =6562a(9) =100390882a(10) =214358882a(11) =1686434a(12) =815730722a(13) =1481554114a(14) =2563287812a(15) =257a(16) =6975757442a(17) =1686434a(18) =16983563042a(19) =100390882a(20) =37828630724a(21) =55090232674a(22) =78310985282a(23) =1686434a(24) =390626a(25) =209642795554a(26) =6562a(27) =1481554114a(28) =500246412962