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 A073304 #4 Mar 30 2012 17:36:39 %S A073304 365,334,306,275,245,214,184,153,122,92,61,31,0 %N A073304 Remaining days in non-leap year at end of n-th month. %e A073304 a(6)=184 because there are 184 days left in a (non-leap) year on Jun 30, the sixth month. %Y A073304 Cf. A073305 (remaining days in leap year), A061251 (elapsed days at end of n-th month beginning with non-leap year). %K A073304 fini,full,nonn %O A073304 0,1 %A A073304 _Rick L. Shepherd_, Jul 23 2002