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 A118840 #10 Aug 30 2025 06:15:36 %S A118840 2,3,149,1097,22027,3989519570547215850763757278730095398677254309 %N A118840 Primes corresponding to indices A059303. %C A118840 a(7) has 9971 digits and is too large to include. - _Jason Yuen_, Aug 30 2025 %H A118840 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/e-Prime.html">e-Prime</a> %Y A118840 Cf. A059303. %K A118840 nonn,changed %O A118840 1,1 %A A118840 _Eric W. Weisstein_, May 01 2006 %E A118840 a(1) = 2 added by _Jason Yuen_, Aug 30 2025