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 A228952 #16 Jun 02 2025 08:37:50 %S A228952 1,2,5,14,38,92,216,518,1165,2641,5981,13215,28880,62481,133539, %T A228952 281878,595867,1257995,2656439,5585174,11751388,24708442,51644779, %U A228952 107729838,224507391,467923765,971364960,2016542071 %N A228952 A010062(2^n-1). %C A228952 Arises in studying the asymptotics of A010062. %F A228952 A010062(2^n) = A092391(a(n)). %o A228952 (PARI) s=1;for(n=0,30,for(i=2^n+1,2^(n+1),s+=hammingweight(s));print1(s",")) %Y A228952 Cf. A229167. %K A228952 nonn %O A228952 0,2 %A A228952 _M. F. Hasler_, Oct 05 2013