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 A011555 #21 Nov 11 2023 03:34:18 %S A011555 6,108,4488,376200 %N A011555 Number of vertices of secondary polytope for triangle X n-simplex. %D A011555 Gelfand, Kapranov and Zelevinsky, Discriminants, Resultants and Multidimensional Determinants, Birkhäuser, 1994, pp. 243-250. %H A011555 J. A. de Loera, <a href="https://doi.org/10.1007/BF02711494">Nonregular triangulations of products of simplices</a>, Discrete Comp. Geom. 15(3) (1996), 253-264. %Y A011555 Cf. A011556, A011781, A122722, A273464, A326367, A326368, A326369. %K A011555 nonn,hard,more %O A011555 1,1 %A A011555 _N. J. A. Sloane_