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 A067447 #12 Apr 04 2025 22:31:13
%S A067447 6,64,64,625,6436343,64,62748517,6561,68719476736,60466176,
%T A067447 64268410079232,68719476736,67108864,6103515625,6746640616477458432,
%U A067447 65536,66249952919459433152512,68719476736,609359740010496
%N A067447 Smallest n-th power starting with 6.
%C A067447 Terms from _Robert G. Wilson v_.
%H A067447 Robert Israel, <a href="/A067447/b067447.txt">Table of n, a(n) for n = 1..605</a>
%p A067447 f:= proc(n) local x, y;
%p A067447 for x from 2 do
%p A067447 y:= x^n;
%p A067447 if floor(y/10^ilog10(y)) = 6 then return x^n fi
%p A067447 od
%p A067447 end proc:
%p A067447 map(f, [$1..50]); # _Robert Israel_, Apr 02 2025
%t A067447 a = {}; Do[k = 1; While[First[IntegerDigits[k^n]] != 6, k++ ]; a = Append[a, k^n], {n, 1, 25}]; a (* _Robert G. Wilson v_ *)
%Y A067447 Cf. A067442, A067443, A067444, A067445, A067446.
%K A067447 base,easy,nonn
%O A067447 1,1
%A A067447 _Amarnath Murthy_, Feb 05 2002