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 A152206 #7 Apr 14 2021 00:06:44 %S A152206 0,1,2,3,5,6,4,5,6,7,5,6,5,6,5,6,7,8,5,6,7,8,5,6,6,7,6,7,4,5,7,8,8,9, %T A152206 7,8,8,9,7,8,5,6,4,5,9,10,6,7,8,9,10,11,6,7,5,6,6,7,9,10,5,6,6,7,7,8, %U A152206 8,9,9,10,9,10,7,8,10,11,10,11,7,8,6,7,6,7,7,8,8,9,5,6,7,8,9,10,10,11,5,6,6 %N A152206 a(n) = sum of base-2 digits of A037308(n) = sum of base-10 digits of A037308(n). %Y A152206 Cf. A037308, Sum of base-2 digits of n = sum of base-10 digits of n. %K A152206 nonn,base,less %O A152206 0,3 %A A152206 _Zak Seidov_, Nov 29 2008