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 A061459 #9 Aug 05 2020 19:30:56 %S A061459 1,4,9,100,144,196,400,625,900,10000,11664,14884,40000,46656,60025, %T A061459 90000,96100,1000000,1028196,1493284,4000000,4112784,6385729,9000000, %U A061459 9253764,100000000,100400400,139287204,149377284,187799616,400000000 %N A061459 Squares which produce squares when the leading digit is moved to the end. %H A061459 Harvey P. Dale, <a href="/A061459/b061459.txt">Table of n, a(n) for n = 1..50</a> %e A061459 196 becomes 961 which is also a square. %t A061459 Select[Range[20000]^2,IntegerQ[Sqrt[FromDigits[RotateLeft[ IntegerDigits[ #]]]]]&] (* _Harvey P. Dale_, Jan 23 2014 *) %Y A061459 Cf. A061460. %K A061459 nonn,base %O A061459 1,2 %A A061459 _Amarnath Murthy_, May 04 2001 %E A061459 More terms from _Erich Friedman_, May 08 2001