The second primorial based variant of arithmetic derivative: a(p) = A034386(p) for p prime, a(u*v) = a(u)*v + u*a(v), with a(0) = a(1) = 0.
A328769
The second primorial based variant of arithmetic derivative: a(p) = A034386(p) for p prime, a(u*v) = a(u)*v + u*a(v), with a(0) = a(1) = 0.
Terms
- a(0) =0a(1) =0a(2) =2a(3) =6a(4) =8a(5) =30a(6) =18a(7) =210a(8) =24a(9) =36a(10) =70a(11) =2310a(12) =48a(13) =30030a(14) =434a(15) =120a(16) =64a(17) =510510a(18) =90a(19) =9699690a(20) =160a(21) =672a(22) =4642a(23) =223092870a(24) =120a(25) =300a(26) =60086a(27) =162a(28) =896a(29) =6469693230
External references
- oeis: A328769