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%I #14 Nov 13 2024 16:40:21
%S 100,2116,33124,443556,5555449,66650896,777740544,8888718400,
%T 99999515529,1010101010089161070864,111111111110888888888889,
%U 12121212121205459165906769,1313131313131245483985582729,141414141414141058690681961329,15151515151515144862248400372996
%N a(n) = floor( {n concatenated with n n times }^(1/2) * 10 )^2.
%F Floor[ {n concatenated with n n times }^(1/2)*10]^2 - Michael Keagel (mjk374(AT)psu.edu), Feb 12 2006
%e a(3) = floor(333^(1/2)*10)^2 = 33124.
%p a:= n-> floor(sqrt(parse(cat(n$n)))*10)^2:
%p seq(a(n), n=1..15); # _Alois P. Heinz_, Nov 13 2024
%t Table[Floor[10 *Surd[FromDigits[Flatten[IntegerDigits/@ PadRight[ {}, n, n]]], 2]]^2, {n, 15}] (* _Georg Fischer_, Nov 13 2024 *)
%Y Cf. A114776.
%K base,nonn
%O 1,1
%A _Amarnath Murthy_, Nov 17 2005
%E Corrected and extended by Michael Keagel (mjk374(AT)psu.edu), Feb 12 2006
%E Offset changed to 1; a(12) corrected and more terms from _Georg Fischer_, Nov 13 2024