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 A103429 #8 Jan 23 2021 11:16:17 %S A103429 2,194,3434,29356,162190,679654,2323878,6839595,17909922,42675551, %T A103429 94125356,194693240,381214450,712191373,1277323894,2210486280, %U A103429 3706015236,6040816887,9601083812,14916225896,22701123860,33905935285 %N A103429 (1/4)*number of acute triangles that can be formed from the points of an (n+1)X(n+1)X(n+1) lattice cube. %Y A103429 Cf. all triangles in lattice cube A103426; special triangles in lattice cube: A103427, A103428, A103499, A103500, A103501; A103158 tetrahedra in lattice cube. %Y A103429 Cf. A190019 (analogous 2-dimensional problem). %K A103429 nonn %O A103429 1,1 %A A103429 _Hugo Pfoertner_, Feb 08 2005