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 A168009 #6 Mar 14 2020 03:12:40 %S A168009 1,2,3,4,5,6,9,10,11,12,21,22,23,24,45,46,47,48,93,94,95,96,99,100, %T A168009 101,102,201,202,203,204,209,210,219,220,221,222,233,234,465,466,467, %U A168009 468,933,934,935,936,939,940,941,942,1881,1882,1883,1884,1889,1890,3777 %N A168009 Numbers of A168007, in sorted order. %Y A168009 Cf. A168007, A168008. %K A168009 nonn %O A168009 1,2 %A A168009 _Omar E. Pol_, Nov 19 2009 %E A168009 More terms from _Jinyuan Wang_, Mar 14 2020