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 A029794 #21 Jan 13 2020 02:32:41
%S A029794 0,1,100,10000,1000000,22676644,23348224,100000000,107661376,
%T A029794 110103049,125552025,153388225,160022500,219899241,504002500,
%U A029794 552532036,605406025,696643236,1169366416,1311526225,2267664400
%N A029794 Squares n such that sqrt(n) and n have the same set of digits.
%C A029794 Only perfect squares are considered. Otherwise, this sequence would have to include numbers like 1234567890, since sqrt(1234567890) = 35136.41828644462161665823116758077037159... - _Alonso del Arte_, Jan 12 2020
%H A029794 Shawn A. Broyles and David A. Corneth, <a href="/A029794/b029794.txt">Table of n, a(n) for n = 1..10000</a> (First 1001 terms by Shawn A. Broyles)
%F A029794 a(n) = A029793(n)^2. - _Michel Marcus_, Apr 29 2018
%t A029794 Select[Range[0, 199999], Union[IntegerDigits[#]] == Union[IntegerDigits[#^2]] &]^2 (* _Alonso del Arte_, Jan 12 2020 *)
%o A029794 (PARI) lista(nn) = {for (n=0, nn, if (Set(digits(n^2)) == Set(digits(n)), print1(n^2, ", ")););} \\ _Michel Marcus_, Apr 29 2018
%Y A029794 Cf. A029793.
%K A029794 nonn,base
%O A029794 1,3
%A A029794 _Patrick De Geest_
%E A029794 Offset corrected by _Michel Marcus_, Apr 29 2018