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 A134997 #18 Apr 03 2023 10:36:11 %S A134997 2,1,2,2,1,14,40,52,228,482,1592,4758,15810,53202,197429,725196 %N A134997 Number of dihedral primes with n digits. %H A134997 C. K. Caldwell, The Prime Glossary, <a href="https://t5k.org/glossary/page.php?sort=DihedralPrime">Dihedral Prime</a> %H A134997 C. Rivera, <a href="http://www.primepuzzles.net/puzzles/puzz_039.htm">Source</a> %Y A134997 Cf. A038136, A048662, A134996. %K A134997 nonn,base,more %O A134997 1,1 %A A134997 _Felice Russo_ %E A134997 a(1) corrected by _Patrick Capelle_, Feb 06 2008 %E A134997 a(11)-a(16) from _Hiroaki Yamanouchi_, Sep 04 2014