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 A219901 #7 Jan 29 2023 07:25:41 %S A219901 0,0,2,4,10,16,29,41,64,85,120,153,203,250,318,382 %N A219901 Number of isomorphism classes of IPR nanocones with 3 pentagons and a symmetric boundary of length n. %H A219901 Gunnar Brinkmann and Nico Van Cleemput, <a href="https://doi.org/10.1016/j.dam.2011.06.014">Classification and generation of nanocones</a>, Discrete Applied Mathematics, 159 (2011), 1528-1539. %Y A219901 Cf. A197988, A198014, A198015, A198016, A198086. %Y A219901 Cf. A219902, A219903, A219904, A219905. %K A219901 nonn,more %O A219901 0,3 %A A219901 _N. J. A. Sloane_, Dec 01 2012