(Product(primitive roots of p) - 1)/p, where p = prime(n) and n > 2.

A222009

(Product(primitive roots of p) - 1)/p, where p = prime(n) and n > 2.

Terms

    a(0) =1a(1) =2a(2) =61a(3) =71a(4) =684847a(5) =8621a(6) =4768743913a(7) =192769238731a(8) =31302497

External references