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 A014287 #13 Oct 19 2018 09:57:08 %S A014287 5,505,1,5,101,9,0,6,5,509,0,505,1,5,6,1,509,515,514,6,9,509,7,9,105, %T A014287 15,6,10,9,0,5,505,1,5,101,9,0,6,5,5,10,500,6,10,96,14,5,11,10,104, %U A014287 109,599,105,109,195,113,104,110,109,9,14,494,10,14 %N A014287 Value of the name of n as a Roman number, keeping only relevant letters, zero if none (v=u). French version. %D A014287 R. Goscinny and A. Uderzo, Les Aventures d'Astérix le Gaulois, Editions Dargaud. %F A014287 Decimal equivalent of v, dvx, i, v, ci, ix, 0, vi, v, dix, 0, dv, i, v, ... %Y A014287 Cf. A002904. %K A014287 nonn,word %O A014287 1,1 %A A014287 _Olivier Gérard_ %E A014287 a(2) corrected and more terms from _Sean A. Irvine_, Oct 18 2018