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 A318934 #15 Oct 15 2022 16:42:20
%S A318934 3,6,12,13,24,25,26,27,48,49,50,51,52,53,54,55,96,97,98,99,100,101,
%T A318934 102,103,104,105,106,107,108,109,110,111,192,193,194,195,196,197,198,
%U A318934 199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223
%N A318934 Numbers whose binary expansion begins with exactly two 1's.
%H A318934 Seiichi Manyama, <a href="/A318934/b318934.txt">Table of n, a(n) for n = 1..10000</a>
%e A318934 3 11
%e A318934 6 110
%e A318934 12 1100
%e A318934 13 1101
%e A318934 24 11000
%e A318934 25 11001
%e A318934 26 11010
%e A318934 27 11011
%e A318934 48 110000
%e A318934 49 110001
%e A318934 ...
%t A318934 Join[{3},Select[Range[4,250],Take[IntegerDigits[#,2],3]=={1,1,0}&]] (* _Harvey P. Dale_, Oct 15 2022 *)
%Y A318934 This is the union of {3} and A004758.
%Y A318934 Cf. A007088.
%K A318934 nonn,base,easy
%O A318934 1,1
%A A318934 _N. J. A. Sloane_, Sep 13 2018