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 A077503 #14 Mar 22 2021 02:42:58 %S A077503 1,25,324,4096,50176,600625,7001316,80013025,900000000,1000014129, %T A077503 11000024161,120000580921,1300001310976,14000004588964, %U A077503 150000007007601,1600000000000000,17000000233634401,180000000244436761 %N A077503 Smallest n-digit square beginning with n. %F A077503 a(n) = ceiling(sqrt(n*10^d))^2 where d = n - digit(n), digit(n) = number of digits in n. - _Ray Chandler_, Aug 11 2003 %Y A077503 Cf. A000290, A048761, A055642, A087095. %K A077503 base,nonn %O A077503 1,2 %A A077503 _Amarnath Murthy_, Nov 08 2002 %E A077503 More terms from _Ray Chandler_, Aug 11 2003