a(n) = phi(12^n+1), where phi is Euler's totient function (A000010).
A366716
a(n) = phi(12^n+1), where phi is Euler's totient function (A000010).
Terms
- a(0) =1a(1) =12a(2) =112a(3) =1296a(4) =20416a(5) =229680a(6) =2306304a(7) =32916240a(8) =400515072a(9) =3863116800a(10) =47825825600a(11) =685853880624
External references
- oeis: A366716