Sum of the 4th powers of the square divisors of n.

Terms

a(0) =1a(1) =1a(2) =1a(3) =257a(4) =1a(5) =1a(6) =1a(7) =257a(8) =6562a(9) =1a(10) =1a(11) =257a(12) =1a(13) =1a(14) =1a(15) =65793a(16) =1a(17) =6562a(18) =1a(19) =257a(20) =1a(21) =1a(22) =1a(23) =257a(24) =390626a(25) =1a(26) =6562a(27) =257a(28) =1a(29) =1