Largest k > 1 such that (sum of digits of k^n)*(sum of digits of k^(n+1)) = k, or 0 if no such k exists.
A130181
Largest k > 1 such that (sum of digits of k^n)*(sum of digits of k^(n+1)) = k, or 0 if no such k exists.
Terms
- a(0) =486a(1) =1215a(2) =4374a(3) =4672a(4) =12862a(5) =12649a(6) =23408a(7) =32761a(8) =47477a(9) =56852a(10) =59048a(11) =90746a(12) =116864a(13) =112346a(14) =139472a(15) =149705a(16) =190512a(17) =234247a(18) =254015a(19) =0a(20) =322322a(21) =331775a(22) =391238a(23) =446512a(24) =454951a(25) =546121a(26) =530145a(27) =316250a(28) =613927a(29) =763795
External references
- oeis: A130181