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 A085209 #5 May 18 2024 14:46:11 %S A085209 0,1,1,10,11,10,11,101,110,11,100,111,1010,111,100,101,1001,1110,1011, %T A085209 1100,101,110,1011,10010,1111,10100,1101,110,111,1101,10110,10011, %U A085209 11100,10101,1110,111,1000,1111,11010,10111,100100,11101,10110,1111,1000,1001 %N A085209 Array A085207 in binary. %Y A085209 Transpose: A085210. %K A085209 nonn,tabl,base %O A085209 0,4 %A A085209 _Antti Karttunen_, Jun 23 2003