This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A045793 #10 Sep 04 2021 17:03:57 %S A045793 9,900,961,9025,9216,9409,9604,9801,90000,90601,91204,91809,92416, %T A045793 93025,93636,94249,94864,95481,96100,96721,97344,97969,98596,99225, %U A045793 99856,900601,902500,904401,906304,908209,910116,912025,913936,915849 %N A045793 Squares with initial digit '9'. %F A045793 a(n) = A045863(n)^2. - _Michel Marcus_, Sep 04 2021 %t A045793 Select[Range[1000]^2,First[IntegerDigits[#]]==9&] (* _Harvey P. Dale_, Apr 21 2015 *) %Y A045793 Cf. A045863. %Y A045793 Cf. A045784, A045785, A045786, A045787, A045788, A045789, A045791, A045792. %K A045793 nonn,base %O A045793 1,1 %A A045793 _Jeff Burch_