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 A171741 #15 Aug 22 2015 06:34:51 %S A171741 18,154,19040,267140,2853326516320,3360633 %N A171741 The first 3-fold intrinsically n-palindromic number (given in base ten). %C A171741 The large value for the 6-palindrome case, a(6)=2853326516320, has 139 as the smallest of the three bases. %C A171741 Coincidentally, the following much shorter term, a(7)= 3360633, involves base 9 through 11, the conjunction of base-9 and base-10 palindromes (A029965) comes up a term short (assuming space limitations remain as they are at the beginning of 2011), and A053740 is a totally unrelated collection of palindromes that also contains 33633. %C A171741 a(8) > 10^18. - _Hiroaki Yamanouchi_, Aug 22 2015 %e A171741 a(5)=267140 is 6D4D6 in base 14, 54245 in base 15, and 29E92 in base 18. %e A171741 a(7)=3360633 is 6281826 in base 9 and 1995991 in base 11. %Y A171741 Cf. A171701, A171702, A171703, A171704, A171705, A171706, A171740, A171742, A053780, A029966, A029965. %K A171741 nonn,more,base %O A171741 2,1 %A A171741 _James G. Merickel_, Dec 17 2009