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 A274767 #6 Dec 04 2016 12:18:02 %S A274767 2,3,4,7,1,2,5 %N A274767 Decimal expansion of the googol-th prime. %C A274767 More digits are known if the Riemann hypothesis is assumed. (See StackExchange link.) %H A274767 Math StackExchange, <a href="http://math.stackexchange.com/questions/1848854/how-many-digits-of-the-googol-th-prime-can-we-calculate-or-were-calculated">How many digits of the googol-th prime can we calculate (or were calculated)?</a> %K A274767 nonn,cons,fini,more %O A274767 103,1 %A A274767 _Eric M. Schmidt_, Jul 04 2016