a(n) = n^n * Product_{p|n, p prime} (1 + 1/p^n).
A320974
a(n) = n^n * Product_{p|n, p prime} (1 + 1/p^n).
Terms
- a(0) =1a(1) =5a(2) =28a(3) =272a(4) =3126a(5) =47450a(6) =823544a(7) =16842752a(8) =387440172a(9) =10009766650a(10) =285311670612
External references
- oeis: A320974