Least n-th order digital invariant which is not an Armstrong number (A005188), or 0 if no such term exists.
A072897
Least n-th order digital invariant which is not an Armstrong number (A005188), or 0 if no such term exists.
Terms
- a(0) =136a(1) =2178a(2) =58618a(3) =63804a(4) =2755907a(5) =0a(6) =144839908a(7) =304162700a(8) =4370652168a(9) =0a(10) =0a(11) =0a(12) =0a(13) =0a(16) =0a(18) =0a(19) =0a(20) =0
External references
- oeis: A072897