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 A099715 #9 Jun 25 2017 15:20:09 %S A099715 1,1,8,113,2374,67927,2508632,115219211,6402538044,42137859873, %T A099715 32293353537408,2842256451820073 %N A099715 Consider the family of multigraphs enriched by the species of arborescences. Sequence gives number of those multigraphs with n arcs. %D A099715 G. Paquin, Dénombrement de multigraphes enrichis, Mémoire, Math. Dept., Univ. Québec à Montréal, 2004. %H A099715 G. Paquin, <a href="/A038205/a038205.pdf">Dénombrement de multigraphes enrichis</a>, Mémoire, Math. Dept., Univ. Québec à Montréal, 2004. [Cached copy, with permission] %K A099715 nonn %O A099715 0,3 %A A099715 _N. J. A. Sloane_, Oct 26 2004