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 A117845 #7 Aug 11 2022 03:18:50 %S A117845 104,101,108,108,111,44,32,119,111,114,108,100 %N A117845 "hello, world" characters encoded in ASCII. %D A117845 Brian W. Kernighan and Dennis M. Ritchie, The C programming language, 1978. %H A117845 Wikipedia, <a href="http://en.wikipedia.org/wiki/Hello_world_program">Hello world program</a>. %F A117845 0 <= n < 12, a(n) = ASCII code of character at position n in "hello, world" %t A117845 ToCharacterCode["hello, world"] (* _Harvey P. Dale_, Apr 26 2016 *) %o A117845 (Python) %o A117845 print([ord(c) for c in "hello, world"]) # _Michael S. Branicky_, Aug 10 2022 %K A117845 fini,full,nonn %O A117845 0,1 %A A117845 Olivier Mengue (dolmen(AT)users.sourceforge.net), May 01 2006