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 A180694 #6 Jan 17 2016 13:20:26 %S A180694 0,3,5,6,15,7,25,8,26,9,18,36,1,19,28,2,11,55,20,29,3,47,12,21,65,30, %T A180694 39,4,48,13,57,22,66,31,75,40,5,49,14,58,23,181,67,32,76,41,120,6,50, %U A180694 208,15,59,217,24,68,147,33,270,77,314,42,7,165,51,209,16,174,60,218,25,183 %N A180694 13^a(n) is smallest power of 13 beginning with n. %H A180694 D. Mondot, <a href="/A180694/b180694.txt">Table of n, a(n) for n=1..32699</a> %Y A180694 Cf. A180692, A180693, A180696 %K A180694 base,nonn %O A180694 1,2 %A A180694 _Daniel Mondot_, Sep 18 2010