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 A053945 #15 Jul 17 2025 20:13:56
%S A053945 36,65536,553536,3363556,353665636,536663556,555356356,65635365636,
%T A053945 5556363553636,6366366663556,35336365356333636,5336553536556563556,
%U A053945 365633633635356536356,635533355333363665566555556,553563335635333565566365536366656
%N A053945 Squares composed of digits {3,5,6}.
%H A053945 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 A053945 Hisanori Mishima, <a href="https://www.asahi-net.or.jp/~KC2H-MSM/mathland/math02/math0210.htm#356">Sporadic tridigital solutions</a>.
%H A053945 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 A053945 a(n) = A053944(n)^2. - _Elmo R. Oliveira_, Jul 17 2025
%Y A053945 Cf. A053944.
%K A053945 nonn,base,more
%O A053945 1,1
%A A053945 _Patrick De Geest_, Mar 15 2000
%E A053945 One more term from Ryan H. Richter (bobort(AT)bigfoot.com), Jan 25 2001
%E A053945 More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 03 2005
%E A053945 a(14)-a(15) from Mishima's website added by _Elmo R. Oliveira_, Jul 17 2025