Smallest 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.
A126783
Smallest 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) =80a(1) =80a(2) =70a(3) =3905a(4) =4004a(5) =700a(6) =19278a(7) =32761a(8) =5600a(9) =8100a(10) =24940a(11) =10600a(12) =56330a(13) =68040a(14) =81760a(15) =149705a(16) =116180a(17) =126360a(18) =123580a(19) =0a(20) =65500a(21) =311003a(22) =205030a(23) =114400a(24) =454951a(25) =317350a(26) =312170a(27) =296270a(28) =359380a(29) =332750
External references
- oeis: A126783