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 A229925 #18 Oct 13 2013 10:17:35 %S A229925 1,5,9,23,31,71,87,173,223,379,471,801,951,1495,1851,2736,3282,4832, %T A229925 5708,8126,9704,13290,15694,21496,25038,33396,39330,51452 %N A229925 Numbers of espalier polycubes of a given volume in dimension 5. %C A229925 A (d+1)-pyramid polycube is a (d+1)-polycube obtained by gluing together horizontal (d+1)-plateaux (parallelepipeds of height 1) in such a way that the cell (0,0,...,0) belongs to the first plateau and each cell with coordinates (0,n_1,...,n_d) belonging to the first plateau is such that n_1 , ... , n_d >= 0. %C A229925 If the cell with coordinates (n_0,n_1,...,n_d) belongs to the (n_0+1)-st plateau (n_0>0), then the cell with coordinates (n_0-1, n_1, ... ,n_d) belongs to the n_0-th plateau. %C A229925 A (d+1)-espalier is a (d+1)-pyramid such that each plateau contains the cell (n_0,0,...,0). %Y A229925 Cf. A227925, A229915. %K A229925 nonn %O A229925 1,2 %A A229925 _Matthieu Deneufchâtel_, Oct 03 2013