%N The first n-fold intrinsically 5-palindrome (represented in base ten).
%C The fourth term, which is first 5-palindromic in base 91, is almost a concatenation of base-ten 5-palindromes.
%C 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 a(5) > 10^14. - _Hiroaki Yamanouchi_, Aug 22 2015
%e a(2)=2293 is 33133 in base 5 and 14341 in base 6;
%e a(3)=267140 is 6D4D6, 54245 and 29E92 in bases 14, 15 and 18, respectively.
%Y Cf. A171701, A171702, A171703, A171705, A171706, A171740, A171741, A171742 A217146.
%A _James G. Merickel_, Dec 17 2009