Product of unitary divisors of n.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =36a(6) =7a(7) =8a(8) =9a(9) =100a(10) =11a(11) =144a(12) =13a(13) =196a(14) =225a(15) =16a(16) =17a(17) =324a(18) =19a(19) =400a(20) =441a(21) =484a(22) =23a(23) =576a(24) =25a(25) =676a(26) =27a(27) =784a(28) =29a(29) =810000