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 A048463 #6 Oct 14 2019 23:41:08 %S A048463 2,3,7,13,97,127,127,757,0,8933,0,18917,49193,53831,71023,71023,0,0, %T A048463 17427659,30196487,0,0,0,0,1586875049,988142237,7021048691,1397537747, %U A048463 0,2760703019,2760703019,0,0,1033545746063,0,0,7916712387631,0,0,0 %N A048463 Smallest prime occurring in generation n (0 if none). %Y A048463 For "Generations" see A048448-A048455. See also A047844. %K A048463 nonn %O A048463 0,1 %A A048463 _Patrick De Geest_, May 15 1999