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 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. 3
 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, 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, 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 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,37 COMMENTS The first interval is assumed to be (1, A158923(1)]. LINKS Daniel Forgues, Table of n, a(n) for n=1..9696 CROSSREFS Cf. A158923: a(1) = 2, a(n) = a(n-1) + round(log(a(n-1))), n >= 2, for which each (a(n-1), a(n)] interval asymptotically contains one prime power on average. Cf. A158925: Accumulated excess or deficit of prime powers in (1, A158924(n)] (Partial sums of A158924). Cf. A000961 Prime powers p^k (p prime, k >= 0). Cf. A025528 Number of prime powers <= n with exponents >0. Sequence in context: A037273 A285313 A231366 * A025426 A269244 A204246 Adjacent sequences:  A158921 A158922 A158923 * A158925 A158926 A158927 KEYWORD sign AUTHOR Daniel Forgues, Mar 31 2009 EXTENSIONS Corrected and edited by Daniel Forgues, Apr 21 2009 STATUS approved

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Last modified August 1 13:55 EDT 2021. Contains 346391 sequences. (Running on oeis4.)