Minimum value of k such that Sum_{i=k..k+n-1} i = Sum_{i=k..k+n-1} i', where i' is the arithmetic derivative of i.
A227390
Minimum value of k such that Sum_{i=k..k+n-1} i = Sum_{i=k..k+n-1} i', where i' is the arithmetic derivative of i.
Terms
- a(0) =0a(1) =16a(2) =390a(3) =30a(4) =156a(5) =93052a(6) =1884a(7) =2910
External references
- oeis: A227390