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 A135273 #15 Oct 11 2019 11:16:23 %S A135273 512,2304,4608,5376,4032,2016,672,144,18,1 %N A135273 Row 9 of A038207. %C A135273 A 9-cube or enneract is a nine-dimensional hypercube with 512 vertices, 2304 edges, 4608 square faces, 5376 cubic cells, 4032 tesseract 4-faces, 2016 penteract 5-faces, 672 hexeract 6-faces, 144 hepteract 7-faces and 18 octeract 8-faces. %H A135273 Wikipedia, <a href="https://en.wikipedia.org/wiki/Enneract">Enneract</a>. %p A135273 for i from 9 to 9 do seq(binomial(i, j)*2^(i-j), j = 0 .. i-1) od; %o A135273 (PARI) Vec((x+2)^9+O(x^10)) \\ _Joerg Arndt_, Apr 15 2013 %Y A135273 Cf. A038207, A135269, A135270, A135271, A135272. %K A135273 easy,fini,nonn,full %O A135273 0,1 %A A135273 _Zerinvary Lajos_, Dec 02 2007