%I
%S 0,0,0,0,0,1,0,0,0,1,1,1,0,1,0,0,0,0,1,0,1,1,0,0,1,1,1,0,0,1,0,1,
%T 1,0,1,0,2,0,1,1,0,0,0,0,1,0,0,0,1,1,1,1,1,0,1,0,1,0,0,1,1,0,1,
%U 0,1,0,1,0,0,1,0,1,0,1,0,0,0,1,0,1,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,1,0
%N Number of prime powers  1 in interval (A158923(n1), A158923(n)] expressing the excess or deficit relative to the asymptotic average of 1.
%C The first interval is assumed to be (1, A158923(1)].
%H Daniel Forgues, <a href="/A158924/b158924.txt">Table of n, a(n) for n=1..9696</a>
%Y Cf. A158923: a(1) = 2, a(n) = a(n1) + round(log(a(n1))), n >= 2, for which each (a(n1), a(n)] interval asymptotically contains one prime power on average.
%Y Cf. A158925: Accumulated excess or deficit of prime powers in (1, A158924(n)] (Partial sums of A158924).
%Y Cf. A000961 Prime powers p^k (p prime, k >= 0).
%Y Cf. A025528 Number of prime powers <= n with exponents >0.
%K sign
%O 1,37
%A _Daniel Forgues_, Mar 31 2009
%E Corrected and edited by _Daniel Forgues_, Apr 21 2009
