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 A216138 #9 Oct 03 2012 14:59:17 %S A216138 335,246,164,150,141,137,109,120,2,93,79,105,105,98,85,82,76,89,2,79, %T A216138 79,80,72,74,71,85,79,83,2,78,62,70,76,78,75,75,67,68,2,70,70,70,67, %U A216138 61,65,60,60,71,2,77,74,67,63,69,69,58,62,57,2,68,60,67,47,62 %N A216138 a(n) = conjectured number of integers k such that n^k has no three consecutive identical digits. %H A216138 V. Raman, <a href="/A216138/b216138.txt">Table of n, a(n) for n = 2..99</a> %Y A216138 Cf. A216063, A216064, A216065. %K A216138 nonn,base %O A216138 2,1 %A A216138 _V. Raman_, Sep 01 2012