a(n) = phi(11^n+1), where phi is Euler's totient function (A000010).
A366690
a(n) = phi(11^n+1), where phi is Euler's totient function (A000010).
Terms
- a(0) =1a(1) =4a(2) =60a(3) =432a(4) =7320a(5) =53680a(6) =803520a(7) =6495720a(8) =100874752a(9) =764738496a(10) =12756110400a(11) =89493288192
External references
- oeis: A366690