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 A075679 #21 Aug 15 2024 19:04:16 %S A075679 1,2,9,54,448,4650,53611,655033,8259635,106371085,1391032357, %T A075679 18412269694 %N A075679 Number of free (rotations and reflections count as same shape) polyominoids (shapes made of faces of cubes) with n squares. %H A075679 John Mason, <a href="/A075679/a075679.pdf">Drawings of polyominoids of sizes 1 through 5</a> %H A075679 Skye Rothstein, <a href="https://digitalcommons.bard.edu/senproj_s2024/254">Folding and Embedding Cubical Complexes</a>, Undergraduate senior project, Bard College (2024). See p. 9. %H A075679 Wikipedia, <a href="https://en.wikipedia.org/wiki/Polyominoid">Polyominoid</a> %Y A075679 Cf. A075678, A056846. %Y A075679 18th row of A366766. %K A075679 hard,more,nonn %O A075679 1,2 %A A075679 _Joseph Myers_, Sep 24 2002