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 A058432 #6 Aug 11 2024 14:41:33
%S A058432 36,3030633036360366336,630366666363306003336330636600336
%N A058432 Squares composed of digits {0,3,6}, not ending with zero.
%H A058432 P. De Geest, <a href="https://www.worldofnumbers.com/threedigits.htm">Index to related sequences</a>
%H A058432 Hisanori Mishima, <a href="http://www.asahi-net.or.jp/~KC2H-MSM/mathland/math02/math0210.htm">Sporadic tridigital solutions</a>
%Y A058432 Cf. A058431.
%K A058432 nonn,base,hard,more,bref
%O A058432 1,1
%A A058432 _Patrick De Geest_, Nov 15 2000