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 A245371 #9 Nov 15 2014 16:42:04 %S A245371 16,25,36,49,64,81,100,121,144,169,289,324,361,400,441,484,529,729, %T A245371 784,841,900,961,1225,1600,1681,1764,1849,1936,2025,2116,2209,2304, %U A245371 2401,2500,2601,2704,2809,2916,3025,3136,3249,3364,3481,3600,4225,4900,5625,6400 %N A245371 Square numbers that remain square when their 2 most-significant (or leftmost) digits in base 10 are removed. %H A245371 Chai Wah Wu, <a href="/A245371/b245371.txt">Table of n, a(n) for n = 1..4137</a> %e A245371 9150625 and 50625 are both squares. %Y A245371 Cf. A225885. %K A245371 nonn,base %O A245371 1,1 %A A245371 _Chai Wah Wu_, Nov 14 2014