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 A104801 #2 Mar 30 2012 17:26:11 %S A104801 10,20,22,23,46,53,70,73,80,88,128,155,158,172,176,220,221,223,230, %T A104801 232,233,245,254,266,274,283,308,328,337,343,344,350,364,379,406,412, %U A104801 422,445,454,469,506,515,521,529,542,548,553,562,571,574,596,599,610,625 %N A104801 Numbers n such that the string n0123456789 is prime. %Y A104801 Cf. A104799, A104802. %K A104801 nonn,base %O A104801 1,1 %A A104801 _Zak Seidov_, Mar 29 2005