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 A275484 #26 Sep 20 2016 05:12:35 %S A275484 65,34,19,17,69,29,23,341,37,31,287,43,41,13,3 %N A275484 Denominators of Conway's FIBONACCIGAME. %C A275484 Like PRIMEGAME, the object of FIBONACCIGAME is to come up with a listing of the Fibonacci numbers through a process of multiplying integers by fractions to see which produce integers, which are then cycled back through the process. %C A275484 Notice that there isn't a 1 in this sequence, which means that the progress of the program, starting from a valid input, eventually halts with 2^Fibonacci(n). %D A275484 Julian Havil, Nonplussed! Mathematical Proof of Implausible Ideas. Princeton: Princeton University Press (2007): 174. %Y A275484 Cf. A275483 (numerators), A203363, A000301. %K A275484 fini,nonn,frac %O A275484 1,1 %A A275484 _Alonso del Arte_, Jul 30 2016