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 A005016 M3007 #26 Jul 30 2024 10:24:55 %S A005016 1,1,3,15,159,3903,214143,25098495,6110517759,3040867308543, %T A005016 3064498377754623,6220489664197758975,25354161321592779612159, %U A005016 207142125428402158677213183,3388838467537660347660899221503 %N A005016 Certain subgraphs of a directed graph. %D A005016 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A005016 E. Andresen and K. Kjeldsen, <a href="http://dx.doi.org/10.1016/0012-365X(76)90054-6">On certain subgraphs of a complete transitively directed graph</a>, Discrete Math. 14 (1976), no. 2, 103-119. %H A005016 William T. Dugan, <a href="https://www.mat.univie.ac.at/~slc/wpapers/FPSAC2024/101.pdf">On the f-vectors of flow polytopes for the complete graph</a>, Sém. Lotharingien Comb., Proc. 36th Conf. Formal Power Series Alg. Comb. (2024) Vol. 91B, Art. No. 101. See p. 3. %H A005016 Hsien-Kuei Hwang, Emma Yu Jin, and Michael J. Schlosser, <a href="https://arxiv.org/abs/2012.13570">Asymptotics and statistics on Fishburn Matrices: dimension distribution and a conjecture of Stoimenow</a>, arXiv:2012.13570 [math.CO], 2020. %F A005016 G.f.: Sum(x^n*Product((2^i-1)/(1+(2^i-2)*x),i = 1 .. n),n = 0 .. infinity). - _Vladeta Jovovic_, Mar 10 2008 %Y A005016 Cf. A005321. %K A005016 nonn %O A005016 0,3 %A A005016 _N. J. A. Sloane_ %E A005016 More terms from _Vladeta Jovovic_, Mar 10 2008 %E A005016 a(0), a(14) from _Max Alekseyev_, May 04 2010