If n = Product (p_j^k_j) then a(n) = Sum (k_j^p_j).

Terms

a(0) =0a(1) =1a(2) =1a(3) =4a(4) =1a(5) =2a(6) =1a(7) =9a(8) =8a(9) =2a(10) =1a(11) =5a(12) =1a(13) =2a(14) =2a(15) =16a(16) =1a(17) =9a(18) =1a(19) =5a(20) =2a(21) =2a(22) =1a(23) =10a(24) =32a(25) =2a(26) =27a(27) =5a(28) =1a(29) =3