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 A065785 #5 Sep 17 2023 21:33:58 %S A065785 49,1849,1671849,24011671849,408646172724011671849, %T A065785 14079962896835441528408646172724011671849, %U A065785 30988070410883251650062468506470600085614079962896835441528408646172724011671849 %N A065785 a(1) = 49; for n > 1, a(n) is the smallest square > a(n-1) with a(n-1) forming its final digits. %C A065785 a(n) = A050638(n+1) for n >= 1. %Y A065785 Cf. A050634, A050638, A065689, A065786, A065787. %K A065785 base,nonn %O A065785 1,1 %A A065785 _Klaus Brockhaus_, Nov 19 2001