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 A030137 #14 Apr 29 2025 13:35:28 %S A030137 1,1,2,5,9,20,13,12,5,3,1,1 %N A030137 Number of one-sided pentagonal n-ominoes (or pentominoes) on the dodecahedron. %Y A030137 Cf. A030135 (free). %Y A030137 Cf. A030138 (icosahedron), A383491 (rhombic triacontahedron), A383493 (triakis icosahedron), A383495 (pentakis dodecahedron), A383498 (deltoidal hexecontahedron). %Y A030137 Cf. A197463 (kisrhombille tiling). %K A030137 nonn,fini,full %O A030137 1,3 %A A030137 _David W. Wilson_