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 A292065 #14 Apr 26 2023 07:02:05 %S A292065 1,1,2,4,12,27,106,339,1336,5029 %N A292065 Number of Besźel [Beszel] Polycubes with n cells, distinguishing mirror images. A Besźel polycube is a polycube whose cells each have two or more even coordinates. %C A292065 This sequence also gives the number of Ul Qoma Polycubes with n cells. An Ul Qoma polycube is a polycube whose cells each have two or more odd coordinates. %D A292065 China Miéville, The City & the City, Macmillan, 2009. %H A292065 G. L. Sicherman, <a href="https://sicherman.net/beszel/beszel.html">Catalogue of Besźel Polycubes</a> %e A292065 a(4) = 4 because 4 of the 8 tetracubes (I, L, T, K) can be embedded in the Besźel section of the cubic grid. %Y A292065 Cf. A292157: Number of Besźel Polycubes with n cells, identifying mirror images; A000162: Number of polycubes with n cells [distinguishing mirror images]. %K A292065 nonn,more,hard %O A292065 1,3 %A A292065 _George Sicherman_, Sep 08 2017