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 A158925 #13 Feb 23 2016 13:18:23 %S A158925 0,0,0,0,0,1,1,1,1,2,1,2,2,3,3,3,3,3,4,4,3,4,4,4,5,4,5,5,5,4,4,5,6,6, %T A158925 5,5,7,7,8,7,7,7,7,7,8,8,8,8,7,8,9,8,7,7,6,6,7,7,7,8,7,7,8,8,9,9,10, %U A158925 10,10,9,9,10,10,9,9,9,9,10,10,11,11,11,11,11,11,11,11,11,10,11,10,11,11,11 %N A158925 Accumulated excess or deficit of prime powers in (1, A158924(n)]. %C A158925 Partial sums of A158924. %C A158925 First term < 0: a(9503) = -1. - _Sidney Cadot_, Sep 23 2015 %H A158925 Daniel Forgues, <a href="/A158925/b158925.txt">Table of n, a(n) for n=1..9696</a> %Y A158925 Cf. A158924, "Number of prime powers - 1 in interval (A158923(n-1), A158923(n)] expressing the excess or deficit relative to the asymptotic average of 1." %K A158925 sign %O A158925 1,10 %A A158925 _Daniel Forgues_, Mar 31 2009 %E A158925 Corrected and edited by _Daniel Forgues_, Apr 22 2009