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 A211405 #12 Feb 12 2013 04:04:18 %S A211405 5,17,73,127,313,1453,22861,28123,296713,309481,2063947162127 %N A211405 Prime numbers that in binary are palindromic and also have palindromic index. %C A211405 This has been searched through 2^33. %C A211405 The index of a(11) is 75558337841. a(12) > 2^44. - _Giovanni Resta_, Feb 12 2013 %e A211405 The binary representations of the first three terms and their indices are 101 and 11, 10001 and 111, and 1001001 and 10101. %Y A211405 Cf. A046941, A016041. %K A211405 nonn,base %O A211405 1,1 %A A211405 _James G. Merickel_, Feb 09 2013 %E A211405 a(11) from _Giovanni Resta_, Feb 12 2013