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 A032584 #7 Oct 06 2019 18:24:33 %S A032584 27,35,39,45,55,57,65,77,81,85,91,95,117,119,121,123,125,143,145,147, %T A032584 153,155,161,165,175,177,183,185,187,203,207,209,213,215,217,221,225, %U A032584 243,245,247,249,253,255,265,275,279,287,291,295,299,301 %N A032584 Odd numbers which are neither prime nor lucky. %Y A032584 Cf. A000959, A032583. %K A032584 nonn %O A032584 1,1 %A A032584 _Patrick De Geest_, Apr 15 1998