This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A067470 #9 Sep 10 2022 11:46:09
%S A067470 1,16,125,1296,16807,117649,2097152,16777216,134217728,1073741824,
%T A067470 31381059609,282429536481,2541865828329,22876792454961,
%U A067470 205891132094649,1853020188851841,16677181699666569,150094635296999121,1350851717672992089,12157665459056928801,109418989131512359209
%N A067470 Smallest n-digit n-th power.
%C A067470 For n>21 there is no such number: length(9^22)=21 and length(10^22)=23. - _Vladeta Jovovic_, Feb 14 2002
%e A067470 a(4)= 1296 = 6^4, as 5^4 = 625 has 3 digits.
%t A067470 Table[Ceiling[Surd[10^(n-1),n]]^n,{n,21}] (* _Harvey P. Dale_, Sep 10 2022 *)
%K A067470 base,easy,full,nonn,fini
%O A067470 1,2
%A A067470 _Amarnath Murthy_, Feb 09 2002
%E A067470 More terms from _Sascha Kurz_, Mar 18 2002