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A095011 Number of 8k+5 primes (A007521) in range ]2^n,2^(n+1)]. 4
0, 1, 1, 1, 3, 2, 6, 11, 20, 35, 63, 118, 216, 407, 759, 1424, 2686, 5094, 9652, 18472, 35068, 67068, 128421, 246403, 473647, 911479, 1757076, 3390256, 6552075, 12675294, 24545280, 47583568, 92332958 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Table of n, a(n) for n=1..33.

A. Karttunen and J. Moyer, C-program for computing the initial terms of this sequence

Index entries for sequences related to occurrences of various subsets of primes in range ]2^n,2^(n+1)]

MATHEMATICA

Module[{nn = 21, s}, s = Select[8 Range[0, 2^nn] + 5, PrimeQ]; Table[Count[s, _?(2^n < # < 2^(n + 1) &)], {n, nn}]] (* Michael De Vlieger, Jul 23 2017 *)

CROSSREFS

a(n) = A095014(n)-A095010(n). Cf. A091128.

Sequence in context: A331889 A109876 A108284 * A274975 A188621 A175182

Adjacent sequences:  A095008 A095009 A095010 * A095012 A095013 A095014

KEYWORD

nonn

AUTHOR

Antti Karttunen and Labos Elemer, Jun 01 2004

STATUS

approved

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Last modified August 13 06:22 EDT 2020. Contains 336442 sequences. (Running on oeis4.)