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 A058458 #11 Jul 18 2025 19:33:19
%S A058458 36,223362332663626223236,32263266662666266363236,
%T A058458 6323226232326633633323632632336,
%U A058458 63233226236322223226263332266636366232262662262333636
%N A058458 Squares composed of digits {2,3,6}.
%H A058458 Patrick De Geest, <a href="https://www.worldofnumbers.com/threedigits.htm">Index to related sequences</a>.
%H A058458 Hisanori Mishima, <a href="https://www.asahi-net.or.jp/~KC2H-MSM/mathland/math02/math0210.htm#236">Sporadic tridigital solutions</a>.
%F A058458 a(n) = A058457(n)^2. - _Elmo R. Oliveira_, Jul 18 2025
%Y A058458 Cf. A058457.
%K A058458 nonn,base,more
%O A058458 1,1
%A A058458 _Patrick De Geest_, Nov 15 2000
%E A058458 a(5) from _Zhao Hui Du_, Mar 09 2024