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 A087369 #14 Apr 17 2025 08:10:10 %S A087369 1,4,9,4,5221225,69696,1002001,44944,9,121,484,69696,484, %T A087369 522666037791100950480675576084059001197730666225,69696,1002001,69696, %U A087369 69696,10201,12321,121,12100022220012621002222000121,12122010222622201022121,123230205292502032321,102012022050220210201,94206450305460249,1000220232126212320220001,12104402820440121,40804,44944 %N A087369 Smallest palindromic square multiple of the n-th palindrome. %e A087369 a(5) = 5221225 = 2285^2. %Y A087369 Subset of A002779. %Y A087369 Cf. A002778. %K A087369 base,nonn %O A087369 1,2 %A A087369 _Amarnath Murthy_, Sep 08 2003 %E A087369 a(7)-a(13) from _Sean A. Irvine_, Mar 01 2010 %E A087369 Terms a(14) onward from _Max Alekseyev_, Apr 02 2025