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 A230807 #6 Oct 30 2013 21:56:33 %S A230807 2,2,1878781,1878781 %N A230807 The smallest of n consecutive palindromic numbers which are all primes. %C A230807 There cannot be 5 consecutive palindromic numbers which are all primes. %e A230807 1878781 is in the sequence because 1878781, 1879781, 1880881 and 1881881 are consecutive palindromic numbers which are all primes. %Y A230807 Cf. A000040, A002113, A002385, A032595, A230806. %K A230807 nonn,base,fini,full %O A230807 1,1 %A A230807 _Shyam Sunder Gupta_, Oct 30 2013