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 A099702 #12 Jan 12 2021 21:31:47
%S A099702 1,2,17,256,5719,173446,6768075,328288840,19468007553,1458080017522,
%T A099702 183476204746761,87209577493989776,154656821805639801687,
%U A099702 617619828457724835488214,5008102331929281541386123923,81618549234469098721106601012472,2666950050438611111026601803629686849
%N A099702 Consider the family of directed multigraphs enriched by the species of simple graphs. Sequence gives number of those multigraphs with n labeled loops and arcs.
%D A099702 G. Paquin, Dénombrement de multigraphes enrichis, Mémoire, Math. Dept., Univ. Québec à Montréal, 2004.
%H A099702 Andrew Howroyd, <a href="/A099702/b099702.txt">Table of n, a(n) for n = 0..50</a>
%H A099702 G. Paquin, <a href="/A038205/a038205.pdf">Dénombrement de multigraphes enrichis</a>, Mémoire, Math. Dept., Univ. Québec à Montréal, 2004. [Cached copy, with permission]
%F A099702 E.g.f.: B(R(x)) where B(x) is the e.g.f. of A014507 and 1 + R(x) is the e.g.f. of A006125. - _Andrew Howroyd_, Jan 12 2021
%o A099702 (PARI) \\ R(n) is A006125 as e.g.f.; EnrichedGdlSeq defined in A098622.
%o A099702 R(n)={sum(k=0, n, 2^binomial(k, 2)*x^k/k!) + O(x*x^n)}
%o A099702 EnrichedGdlSeq(R(20)) \\ _Andrew Howroyd_, Jan 12 2021
%Y A099702 Cf. A006125, A014507, A098622, A099700, A099701, A099703.
%K A099702 nonn
%O A099702 0,2
%A A099702 _N. J. A. Sloane_, Oct 26 2004
%E A099702 Terms a(12) and beyond from _Andrew Howroyd_, Jan 12 2021