login
Squares with initial digit '6'.
12

%I #14 Sep 04 2021 21:35:26

%S 64,625,676,6084,6241,6400,6561,6724,6889,60025,60516,61009,61504,

%T 62001,62500,63001,63504,64009,64516,65025,65536,66049,66564,67081,

%U 67600,68121,68644,69169,69696,600625,602176,603729,605284,606841

%N Squares with initial digit '6'.

%F a(n) = A045860(n)^2. - _Michel Marcus_, Sep 04 2021

%t Flatten[Table[Range[Ceiling[Sqrt[6 10^n]],Floor[Sqrt[7 10^n]]]^2,{n,5}]] (* _Harvey P. Dale_, Jun 15 2011 *)

%Y Cf. A045860.

%Y Cf. A045784, A045785, A045786, A045787, A045788, A045791, A045792, A045793.

%K nonn,base

%O 1,1

%A _Jeff Burch_