GCD of sigma(p#) and phi(p#) where p# = A002110(n) is the product of the first n primes.

A078558

GCD of sigma(p#) and phi(p#) where p# = A002110(n) is the product of the first n primes.

Terms

    a(0) =1a(1) =2a(2) =8a(3) =48a(4) =96a(5) =1152a(6) =9216a(7) =1658880a(8) =3317760a(9) =92897280a(10) =2786918400a(11) =100329062400a(12) =802632499200

External references