A045793 Squares with initial digit '9'.

9, 900, 961, 9025, 9216, 9409, 9604, 9801, 90000, 90601, 91204, 91809, 92416, 93025, 93636, 94249, 94864, 95481, 96100, 96721, 97344, 97969, 98596, 99225, 99856, 900601, 902500, 904401, 906304, 908209, 910116, 912025, 913936, 915849

Offset: 1

Author

Jeff Burch

Keywords

• nonn
• base

Crossrefs

Cf. A045863.

Cf. A045784, A045785, A045786, A045787, A045788, A045789, A045791, A045792.

Programs

Mathematica

Select[Range[1000]^2,First[IntegerDigits[#]]==9&] (* Harvey P. Dale, Apr 21 2015 *)

Formula

a(n) = A045863(n)^2. - Michel Marcus, Sep 04 2021