Numbers k such that k = Sum_{d|phi(k)} mu(phi(d))*phi(k)/d.

Terms

a(0) =1a(1) =3a(2) =5a(3) =25a(4) =125a(5) =625a(6) =3125a(7) =15625a(8) =78125a(9) =390625a(10) =1953125a(11) =9765625a(12) =48828125a(13) =244140625a(14) =1220703125a(15) =6103515625a(16) =30517578125a(17) =152587890625a(18) =762939453125