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 A053935 #20 Jul 18 2025 19:32:49
%S A053935 9,289,29929,8898289,88998998929,2999882888289,29292889289882992929,
%T A053935 99299899998229989289,29222988989999289998222889,
%U A053935 299988829289888292222928892882898892999989922922289
%N A053935 Squares composed of digits {2,8,9}.
%H A053935 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 A053935 Hisanori Mishima, <a href="https://www.asahi-net.or.jp/~KC2H-MSM/mathland/math02/math0210.htm#289">Sporadic tridigital solutions</a>.
%H A053935 Author?, <a href="http://web.archive.org/web/20080708203024/http://blue.kakiko.com/mmrmmr/htm/eqtn06.html">Source</a>, (<a href="http://web.archive.org/web/20060426155831/http://blue.kakiko.com/mmrmmr/txt/eqtn06.txt">txt</a>)
%F A053935 a(n) = A053934(n)^2. - _Elmo R. Oliveira_, Jul 18 2025
%Y A053935 Cf. A053934.
%K A053935 nonn,base,more
%O A053935 1,1
%A A053935 _Patrick De Geest_, Mar 15 2000
%E A053935 More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 14 2005
%E A053935 One more term from _Jon E. Schoenfield_, Sep 04 2006
%E A053935 a(10) from _Zhao Hui Du_, Mar 10 2024