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 A384072 #19 May 24 2025 14:46:38 %S A384072 1,3,3,6,16,39,101,263,694,1839,4884,12840,33508,86227,218284,538796, %T A384072 1284335,2919365,6249499,12411396,22483152,36410533,51641029,62911551, %U A384072 64827047,55869657,40009946,23732630,11668877,4763611,1619236,456756,106602,20157,3101,358,37,3,1 %N A384072 Number of connected components of n faces of the snub cube up to the 24 rotations of the snub cube. %C A384072 Two faces are connected if they share an edge. %C A384072 These are "one-sided" polyforms because reflections are not allowed. %C A384072 The snub cube is the polyhedral dual of the pentagonal icositetrahedron. %H A384072 Peter Kagey, <a href="/A384072/a384072.pdf">Illustration of a(1)-a(3)</a>. %H A384072 Wikipedia, <a href="https://en.wikipedia.org/wiki/Snub_cube">Snub cube</a> %e A384072 a(1) = 3 because the snub cube is not face transitive, but has three distinct orbits of faces: (1) squares, (2) triangles that are connected to a square, and (3) triangles that are not connected to a square. %Y A384072 Cf. A383808 (pentagonal icositetrahedron). %Y A384072 Cf. A309159 (snub square tiling), A383908 (snub trihexagonal tiling). %Y A384072 Cf. A384067 (cuboctahedron), A384068 (truncated cube), A384069 (truncated octahedron), A384070 (rhombicuboctahedron), A384071 (truncated cuboctahedron), A384072 (snub cube). %K A384072 nonn,fini,full %O A384072 0,2 %A A384072 _Peter Kagey_, May 18 2025 %E A384072 a(13)-a(38) from _Bert Dobbelaere_, May 24 2025