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 A185104 #10 Jan 15 2013 21:55:47 %S A185104 11,13,17,31,37,71,73,79,97,113,131,179,199,311,337,373,733,919,991, %T A185104 3911 %N A185104 Primes with property that each swapping any pair of digits also gives a prime. %C A185104 Conjecture: next terms are 1111111111111111111 and 11111111111111111111111. %e A185104 Prime 179 is a term because 197 and 719 are also prime. %e A185104 Prime 1913 is not a term because 9113 is not prime (even though 1193, 1319, 1931 and 3911 are primes). %Y A185104 Cf. A003459 (absolute primes). %Y A185104 Subsequence of A069706 (primes with property that swapping first and last digits also gives a prime). %K A185104 nonn,base,less %O A185104 1,1 %A A185104 _Jaroslav Krizek_, Dec 26 2012