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 A171704 #16 Aug 22 2015 06:35:18 %S A171704 17,2293,267140,4838419019 %N A171704 The first n-fold intrinsically 5-palindrome (represented in base ten). %C A171704 The fourth term, which is first 5-palindromic in base 91, is almost a concatenation of base-ten 5-palindromes. %C A171704 A217146 gives the sequence of values 5-palindromic in at least 4 bases. The search there indicates a fifth term here has first base of 5-palindromicity above 200. - _James G. Merickel_ Oct 19 2012 %C A171704 a(5) > 10^14. - _Hiroaki Yamanouchi_, Aug 22 2015 %e A171704 a(2)=2293 is 33133 in base 5 and 14341 in base 6; %e A171704 a(3)=267140 is 6D4D6, 54245 and 29E92 in bases 14, 15 and 18, respectively. %Y A171704 Cf. A171701, A171702, A171703, A171705, A171706, A171740, A171741, A171742 A217146. %K A171704 nonn,more,base %O A171704 1,1 %A A171704 _James G. Merickel_, Dec 17 2009