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 A180954 #5 Feb 16 2020 20:17:21 %S A180954 1,32,2271,79936,2103269,49998072,1163531779,27263453288 %N A180954 The number of diag(n, n, n) 3D diagonal polyominoes. %C A180954 Top row of Table 1, Minimal polyominoes inscribed in an n X n X n prism, on p. 7 of Alain. a(n) <= A000162(n) (Number of 3-dimensional polyominoes (or polycubes) with n cells). %H A180954 Goupil Alain and Cloutier Hugo, <a href="http://arxiv.org/abs/1009.4859">3D Polyominoes inscribed in a rectangular prism</a>, Sep 24, 2010. %Y A180954 Cf. A000162. %K A180954 nonn %O A180954 1,2 %A A180954 _Jonathan Vos Post_, Sep 27 2010