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 A354706 #6 Jul 01 2022 10:37:38 %S A354706 2,5,13,18,32,41,53,72,89,113,128,149,181,205,242,265,313,338,373,421, %T A354706 450,512,545,584,648,697 %N A354706 Diagonal of A354704. %C A354706 a(n) is a lower bound for the maximum number of grid points in a square grid covered by an arbitrarily positioned and rotated square of side length n, excluding the trivial case of an axis-parallel unshifted square. %C A354706 Grid points must be strictly inside the covering square, i.e., grid points on the perimeter of the square are not allowed. %H A354706 Hugo Pfoertner, <a href="/A354706/a354706.pdf">Illustrations of the terms a(1)..a(22)</a>. %F A354706 a(n) = A354704(n,n). %e A354706 For examples see the figures in the linked file. %Y A354706 Cf. A293330, A354704, A354705, A354707. %K A354706 nonn,more %O A354706 1,1 %A A354706 _Hugo Pfoertner_, Jun 19 2022