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 A230434 #18 Dec 03 2014 00:58:31 %S A230434 2,8,20,28,34,50,82,126 %N A230434 Magic numbers of nucleons. Another version of A018226, with 34 inserted. %C A230434 Union of 34 and A018226. %H A230434 D. Steppenbeck et al., <a href="http://dx.doi.org/10.1038/nature12522">Evidence for a new nuclear 'magic number' from the level structure of 54Ca</a>, Nature, 502 (2013), 207-210, DOI: 10.1038/nature12522. %Y A230434 Cf. A018226, A018227, A033547, A046939, A046940, A110856, A117612. %K A230434 nonn,fini,full %O A230434 1,1 %A A230434 _Omar E. Pol_, Oct 22 2013