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 A179935 #9 Aug 28 2013 10:13:29 %S A179935 0,1,4,9,1024,1089,1156,1225,1296,1369,1444,1521,1600,1681,1764,1849, %T A179935 1936,2025,2116,2209,2304,2401,2500,2601,2704,2809,2916,3025,3136, %U A179935 3249,3364,3481,3600,3721,3844,3969,4096,4225,4356,4489,4624,4761,4900,5041 %N A179935 Squares where the number of decimal digits is also a square. %e A179935 100180081 is a square (10009^2). The number of digits in 100180081 is 9, also a square (3^2). %o A179935 (PARI) isok(n) = issquare(n) && issquare(length(Str(n))); \\ _Michel Marcus_, Aug 28 2013 %Y A179935 Cf. A217761. %K A179935 nonn,base,less %O A179935 1,3 %A A179935 _Dominick Cancilla_, Aug 02 2010