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 A162089 #6 Jul 22 2025 06:49:26 %S A162089 7,777,2066505,150943642765,337176110123479647, %T A162089 24982715242286897029686383 %N A162089 Number of n X n 0..6 arrays with rows and columns, considered as 7-ary numbers, in nondecreasing order. %K A162089 nonn %O A162089 1,1 %A A162089 _R. H. Hardin_ Jun 25 2009