a(n) = Product_{d|n, d>1} prime(A286378(d)-1).

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =18a(6) =7a(7) =8a(8) =33a(9) =50a(10) =13a(11) =108a(12) =17a(13) =98a(14) =285a(15) =16a(16) =23a(17) =2178a(18) =29a(19) =500a(20) =651a(21) =338a(22) =37a(23) =648a(24) =185a(25) =578a(26) =1353a(27) =1372a(28) =43a(29) =162450