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Smallest n-digit square beginning with n.
1

%I #14 Mar 22 2021 02:42:58

%S 1,25,324,4096,50176,600625,7001316,80013025,900000000,1000014129,

%T 11000024161,120000580921,1300001310976,14000004588964,

%U 150000007007601,1600000000000000,17000000233634401,180000000244436761

%N Smallest n-digit square beginning with n.

%F 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 Cf. A000290, A048761, A055642, A087095.

%K base,nonn

%O 1,2

%A _Amarnath Murthy_, Nov 08 2002

%E More terms from _Ray Chandler_, Aug 11 2003