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 A087805 #12 May 13 2023 13:51:01
%S A087805 0,1,3,4,6,9,11,12,14,17,19,22,26,29,31,32,34,37,39,42,46,49,51,54,58,
%T A087805 61,65,70,74,77,79,80,82,85,87,90,94,97,99,102,106,109,113,118,122,
%U A087805 125,127,130,134,137,141,146,150,153,157,162,166,171,177,182,186,189,191
%N A087805 Partial sums of b(k) where {b(k)}_{k>=0} = lim_{n->oo} {A080578(k)-2k : k=2^n,2^n+1,2^n+2,...}.
%F A087805 a(n) seems to be asymptotic to c*n*log(n). Is c = log(2)?
%Y A087805 Cf. A080468, A080578.
%K A087805 nonn
%O A087805 0,3
%A A087805 _Benoit Cloitre_, Oct 12 2003