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 A007936 #17 Aug 21 2020 17:07:57 %S A007936 1,4,9,10,16,18,25,36,40,46,49,52,61,63,64,81,90,94,100,106,108,112, %T A007936 121,136,144,148,160,163,169,180,184,196,205,211,225,234,243,250,252, %U A007936 256,259,265,279,289,295,297,298,306,316,324,342,360,361,400,406,409,414 %N A007936 Some permutation of digits is a square. %D A007936 M. Le, On Smarandache Pseudo-Powers of Third Kind, Smarandache Notions Journal, Vol. 10, No. 1-2-3, 1999, 150-151. %H A007936 N. J. A. Sloane, <a href="/A007936/b007936.txt">Table of n, a(n) for n = 1..6948</a> %H A007936 F. Smarandache, <a href="http://www.gallup.unm.edu/~smarandache/OPNS.pdf">Only Problems, Not Solutions!</a> %t A007936 Select[Range[500],Length[Select[FromDigits/@Permutations[ IntegerDigits[#]], IntegerQ[Sqrt[#]]&]]>0&] (* _Harvey P. Dale_, Mar 30 2011 *) %Y A007936 Cf. A235993 (leading zeros not allowed). %K A007936 nonn,base,easy %O A007936 1,2 %A A007936 R. Muller