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 A217164 #11 Oct 01 2012 14:28:21
%S A217164 42485,22791,21243,2796,27717,33836,14162,22076,9,9443,11429,16661,
%T A217164 16548,11259,10622,14991,5786,28096,9,2890,16736,14116,4549,1398,
%U A217164 27735,7597,3614,10332,9,4057,8497,9060,23985,2943,13859,11422,13270,5773,9,14777,11541
%N A217164 a(n) is the least value of k such that the decimal expansion of n^k contains nine consecutive identical digits.
%H A217164 V. Raman, <a href="/A217164/b217164.txt">Table of n, a(n) for n = 2..100</a>
%t A217164 Table[k = 1; While[! MemberQ[Partition[Differences[IntegerDigits[n^k]], 8, 1], {0, 0, 0, 0, 0, 0, 0, 0}], k++]; k, {n, 2, 50}] (* _T. D. Noe_, Oct 01 2012 *)
%Y A217164 Cf. A045875, A215727, A215728, A215729, A215730, A215731.
%K A217164 nonn,base
%O A217164 2,1
%A A217164 _V. Raman_, Sep 27 2012