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 A061245 #6 Oct 26 2019 17:49:26 %S A061245 3,5,7,11,31,53,71,73,97,311,331,733,751,773,911,953,971,977,991,997, %T A061245 3331,5333,5531,7331,7333,7753,9311,9511,9533,9551,9733,9931,9973, %U A061245 33311,33331,55331,55333,55511,73331,75511,75533,75553,77551,77711 %N A061245 Prime numbers with odd digits in descending order. %Y A061245 Cf. A061244, A028867, A052014. %K A061245 nonn,base %O A061245 1,1 %A A061245 _Amarnath Murthy_, Apr 23 2001 %E A061245 More terms from _Patrick De Geest_, Jun 04 2001