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 A301645 #7 Mar 26 2018 19:57:34 %S A301645 431,49999,7006302246093749999, %T A301645 7094823811888604319171994089906398284847 %N A301645 Primes of form 16*k^k - 1. %F A301645 a(n) = 16*A301524(n)^A301524(n) - 1. %Y A301645 Cf. A301524, A301642. %K A301645 nonn %O A301645 1,1 %A A301645 _Seiichi Manyama_, Mar 25 2018