Odd numbers k that are closer to being perfect than previous terms, and also satisfy the condition that phi(k) = phi(sigma(k)).
A386419
Odd numbers k that are closer to being perfect than previous terms, and also satisfy the condition that phi(k) = phi(sigma(k)).
Terms
- a(0) =1a(1) =3a(2) =15a(3) =45a(4) =585a(5) =2295a(6) =11475a(7) =29835a(8) =72675a(9) =424575a(10) =7977165a(11) =28851975a(12) =29277885a(13) =39317175
External references
- oeis: A386419