a(n) = phi(a(n-1)) * number of divisors of a(n-1), a(1)=3.
A063506
a(n) = phi(a(n-1)) * number of divisors of a(n-1), a(1)=3.
Terms
- a(0) =3a(1) =4a(2) =6a(3) =8a(4) =16a(5) =40a(6) =128a(7) =512a(8) =2560a(9) =20480a(10) =212992a(11) =2949120a(12) =80216064a(13) =3019898880a(14) =130459631616
External references
- oeis: A063506