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 A292151 #11 Dec 15 2017 03:45:51 %S A292151 1,6,9,14,17,20,31,34 %N A292151 Orphelins (orphans): Numbers in two disjoint sectors of the Roulette wheel addressed by an announced bet in European (French) Roulette. %C A292151 The orphelins are the union of 5 numbers (1 - red, 20 - black, 14 - red, 31 - black, 9 -red) in a first sector and of 3 numbers (17 - black, 34 - red, 6 - black) in another sector. The two disjoint sectors separate the "Voisins du Zéro" (neighbors of zero) sector from the "Tiers du Cyclindre" (one third of the wheel) sector. %H A292151 Wikipedia, <a href="https://en.wikipedia.org/wiki/Roulette#Orphelins_.28orphans.29">Roulette - Orphelins (orphans)</a>. %H A292151 Wikipedia, <a href="https://upload.wikimedia.org/wikipedia/commons/7/7d/European_roulette_wheel.svg">Traditional roulette wheel sectors</a>. %Y A292151 Cf. A069892, A069893, A291151, A291152, A291154, A291155, A291156, A291157, A291158, A291159, A291160, A291161, A291162, A291171. %K A292151 nonn,fini,full %O A292151 1,2 %A A292151 _Hugo Pfoertner_, Sep 09 2017