a(n) = Product_{d|n, d>1} A000040(A297113(d)), where A000040(n) gives the n-th prime, and A297113(n) = the excess of n plus the index of the largest dividing prime (A046660 + A061395).

A332461

a(n) = Product_{d|n, d>1} A000040(A297113(d)), where A000040(n) gives the n-th prime, and A297113(n) = the excess of n plus the index of the largest dividing prime (A046660 + A061395).

Terms

    a(0) =1a(1) =2a(2) =3a(3) =6a(4) =5a(5) =18a(6) =7a(7) =30a(8) =15a(9) =50a(10) =11a(11) =270a(12) =13a(13) =98a(14) =75a(15) =210a(16) =17a(17) =450a(18) =19a(19) =1050a(20) =147a(21) =242a(22) =23a(23) =9450a(24) =35a(25) =338a(26) =105a(27) =3234a(28) =29a(29) =11250

External references