Sum of squares of primes dividing n.

Terms

a(0) =0a(1) =4a(2) =9a(3) =4a(4) =25a(5) =13a(6) =49a(7) =4a(8) =9a(9) =29a(10) =121a(11) =13a(12) =169a(13) =53a(14) =34a(15) =4a(16) =289a(17) =13a(18) =361a(19) =29a(20) =58a(21) =125a(22) =529a(23) =13a(24) =25a(25) =173a(26) =9a(27) =53a(28) =841a(29) =38