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 A162087 #6 Jul 22 2025 06:49:12 %S A162087 5,205,102251,733861607,83399309397669,161327438675038562165, %T A162087 5614157616366023545393324521 %N A162087 Number of n X n 0..4 arrays with rows and columns, considered as 5-ary numbers, in nondecreasing order. %K A162087 nonn %O A162087 1,1 %A A162087 _R. H. Hardin_ Jun 25 2009