a(n) = k is the largest k for which k^5 is n digits long and the sum of digits of k^5 is the maximum for any n digit 5th power (A374025).
A380566
a(n) = k is the largest k for which k^5 is n digits long and the sum of digits of k^5 is the maximum for any n digit 5th power (A374025).
Terms
- a(0) =1a(1) =2a(2) =3a(3) =6a(4) =9a(5) =15a(6) =18a(7) =37a(8) =58a(9) =93a(10) =156a(11) =179a(12) =368a(13) =579a(14) =756a(15) =1379a(16) =2337a(17) =3965a(18) =6006a(19) =9746a(20) =14198a(21) =25046a(22) =38779a(23) =60006a(24) =98746a(25) =151446a(26) =231755a(27) =389658a(28) =585516a(29) =819199
External references
- oeis: A380566