Search: id:A158924 Results 1-1 of 1 results found. %I A158924 %S A158924 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, %T A158924 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, %U A158924 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 %V A158924 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, %W A158924 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, %X A158924 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 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. %C A158924 The first interval is assumed to be (1, A158923(1)]. %H A158924 Daniel Forgues, Table of n, a(n) for n=1..9696 %Y A158924 Cf. A158923 a(1) = 2, a(n) = a(n-1) + rnd(ln(a(n-1))), n >= 2, for which each (a(n-1), a(n)] interval asymptotically contains one prime power on average. %Y A158924 Cf. A158925 Accumulated excess or deficit of prime powers in (1, A158924(n)], (Partial sums of A158924). [From Daniel Forgues (squid(AT)zensearch.com), Apr 21 2009] %Y A158924 Contribution from Daniel Forgues (squid(AT)zensearch.com), May 08 2009: (Start) %Y A158924 Cf. A000961 Prime powers p^k (p prime, k >= 0). %Y A158924 Cf. A025528 Number of prime powers <= n with exponents >0. (End) %Y A158924 Sequence in context: A154469 A022902 A037273 this_sequence A025426 A053200 A050870 %Y A158924 Adjacent sequences: A158921 A158922 A158923 this_sequence A158925 A158926 A158927 %K A158924 sign %O A158924 1,37 %A A158924 Daniel Forgues (squid(AT)zensearch.com), Mar 31 2009 %E A158924 Corrected and edited by Daniel Forgues (squid(AT)zensearch.com), Apr 21 2009 Search completed in 0.001 seconds