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 A180022 #2 Mar 30 2012 17:25:51 %S A180022 11,11,13,31,17,71,31,13,37,73,71,17,73,37,79,97,97,79,101,101,107, %T A180022 701,113,311,131,131,149,941,151,151,157,751,167,761,179,971,181,181, %U A180022 191,191,199,991,311,113,313,313,337,733,347,743,353,353,359,953,373,373 %N A180022 Primes that can be obtained from other primes by interchanging the first and last digits. The source prime and the resulting prime are written consecutively. %C A180022 This sequence is different from A007500 and A069706. [From _Parthasarathy Nambi_, Aug 07 2010] %e A180022 389 is a prime and the prime 983 is obtained by interchanging the first and last digits. %Y A180022 Cf. A179826, A180006 %Y A180022 Cf. A007500,A069706. [From _Parthasarathy Nambi_, Aug 07 2010] %K A180022 base,nonn %O A180022 1,1 %A A180022 _Parthasarathy Nambi_, Aug 06 2010