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 A048384 #6 Oct 10 2019 23:21:13 %S A048384 1,25,225,3721,7225,13225,19321,27225,35721,319225,55225,57121,511225, %T A048384 112225,133225,172225,17131321,192721,235225,212521,2217121,235225, %U A048384 373321,3115225,317231721,32319225,511225,5112121,1125721,11323225 %N A048384 Squares resulting from procedure described in A048383. %Y A048384 Cf. A048380, A048383. %K A048384 nonn %O A048384 1,2 %A A048384 _Patrick De Geest_, Mar 15 1999