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 A181182 #14 Aug 19 2013 23:21:58 %S A181182 11,31,41,61,71,137,193,257,467,1399,2887,35999,599699,4987999, %T A181182 589998989,2899889999,58989999989,58799999999999,579999998999999, %U A181182 19999999999997999,199999999999898999,499999999999899989,699999999999979999,799999999999988999,4999999999998899999,7999999999998999899,79999999999988999999 %N A181182 Primes in A181178. %H A181182 Max Alekseyev, <a href="/A181182/b181182.txt">Table of n, a(n) for n = 1..50</a> %F A181182 Intersection of A000040 and A181178. %e A181182 a(2) = 31 because 31 is prime, and is the 4th (zero-free positive) number with digital sum 4 {4,13,22,31,112,121,211,1111}. %Y A181182 Cf. A000040, A007953, A069800, A181178 %K A181182 nonn,base %O A181182 1,1 %A A181182 _Jonathan Vos Post_, Jan 25 2011 %E A181182 a(13) and a(14) from _Zak Seidov_, Jan 26 2011 %E A181182 Terms a(15) onward from _Max Alekseyev_, Aug 19 2013