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 A096393 #15 Feb 08 2024 01:49:37 %S A096393 2,3,3,3,17,3,3,7,37,3,3,43,3,5,5,3,3,23,3,7 %N A096393 Least primitive root of n-th Mersenne prime. %H A096393 Joerg Arndt, <a href="http://www.jjj.de/fxt/#fxtbook">Matters Computational (The Fxtbook)</a> %H A096393 GIMPS, <a href="http://mersenne.org/">Great Internet Mersenne Prime Search</a> %H A096393 S. S. Wagstaff, Jr., <a href="http://www.cerias.purdue.edu/homes/ssw/cun/index.html">The Cunningham Project</a> %e A096393 a(5)=17 because 17 is the least primitive root of the 5th Mersenne prime, 8191. %Y A096393 Cf. A000668, A000043. %K A096393 hard,more,nonn %O A096393 1,1 %A A096393 _Ken Takusagawa_, Aug 05 2004 %E A096393 a(16), a(18)-a(20) from _Max Alekseyev_, Feb 07 2024