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 A065689 #5 Sep 17 2023 21:36:00 %S A065689 0,100,8100,168100,146168100,22086146168100,3107111332622086146168100, %T A065689 3651070583444637156963107111332622086146168100, %U A065689 26849677386445867852272270902339560405490043651070583444637156963107111332622086146168100 %N A065689 a(1) = 0; for n > 1, a(n) is the smallest square > a(n-1) with a(n-1) forming its final digits. %C A065689 a(n) = 100*A050634(n-1) for n > 1. %Y A065689 Cf. A050634, A050635, A061359, A065690, A065691. %K A065689 base,nonn %O A065689 1,2 %A A065689 _Klaus Brockhaus_, Nov 17 2001