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 A053953 #18 Jul 20 2025 10:37:03
%S A053953 4,484,5848884484,44448445584,48554584844544,55584485458558884,
%T A053953 55848845548548544554855888484,588558858558855585845444545444,
%U A053953 85884858448848555885485448555548484845848584584884848554884
%N A053953 Squares composed of digits {4,5,8}.
%H A053953 Patrick De Geest, <a href="https://www.worldofnumbers.com/threedigits.htm">Squares containing at most three distinct digits, Index entries for related sequences</a>.
%H A053953 Hisanori Mishima <a href="https://www.asahi-net.or.jp/~KC2H-MSM/mathland/math02/math0210.htm">Squares consisted of 3 different digits</a>.
%F A053953 a(n) = A053952(n)^2. - _Elmo R. Oliveira_, Jul 19 2025
%Y A053953 Cf. A053952.
%K A053953 nonn,base,more
%O A053953 1,1
%A A053953 _Patrick De Geest_, Mar 15 2000
%E A053953 a(7)-a(8) from Mishima's website added by _Max Alekseyev_, Apr 12 2009
%E A053953 a(9) from _Zhao Hui Du_, Mar 10 2024