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%I #14 Sep 04 2021 21:35:07
%S 729,784,7056,7225,7396,7569,7744,7921,70225,70756,71289,71824,72361,
%T 72900,73441,73984,74529,75076,75625,76176,76729,77284,77841,78400,
%U 78961,79524,700569,702244,703921,705600,707281,708964,710649,712336
%N Squares with initial digit '7'.
%F a(n) = A045861(n)^2. - _Michel Marcus_, Sep 04 2021
%t Flatten[Table[Range[Ceiling[Sqrt[7 10^n]],Floor[Sqrt[8 10^n]]]^2,{n,5}]] (* _Harvey P. Dale_, Jun 15 2011 *)
%Y Cf. A045861.
%Y Cf. A045784, A045785, A045786, A045787, A045788, A045789, A045792, A045793.
%K nonn,base
%O 1,1
%A _Jeff Burch_