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 A048560 #8 Oct 15 2019 11:57:12 %S A048560 2,7,222,70203,22200137858,2220013785800000000001, %T A048560 7020300000101169666284501016647428364760574, %U A048560 22200137858000000000010000000000000000000001726952547826525063393038550959517040374473 %N A048560 a(n+1)^2 is next smallest nontrivial square beginning with a(n)^2, initial square is 4. %C A048560 Next terms are 171 and 343 digits long. %Y A048560 Cf. A048559. %K A048560 nonn,base %O A048560 0,1 %A A048560 _Patrick De Geest_, May 15 1999