a(n) = phi(11^n-1), where phi is Euler's totient function (A000010).
A366685
a(n) = phi(11^n-1), where phi is Euler's totient function (A000010).
Terms
- a(0) =4a(1) =32a(2) =432a(3) =3840a(4) =64400a(5) =373248a(6) =7613424a(7) =56217600a(8) =765889344a(9) =6913984000a(10) =114117380608a(11) =599824465920
External references
- oeis: A366685