login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A095015 Number of 6k+1 primes (A002476) in range ]2^n,2^(n+1)]. 2
0, 1, 1, 2, 3, 7, 11, 20, 37, 69, 126, 228, 434, 806, 1514, 2845, 5361, 10212, 19308, 36747, 70135, 134065, 256824, 492871, 946880, 1822913, 3513737, 6780428, 13103565, 25348226, 49090715, 95167496, 184660541 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

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)]

CROSSREFS

a(n) = A036378(n)-A095016(n) (apart the initial term).

Sequence in context: A265093 A133044 A014529 * A024367 A232432 A037078

Adjacent sequences:  A095012 A095013 A095014 * A095016 A095017 A095018

KEYWORD

nonn

AUTHOR

Antti Karttunen and Labos Elemer, Jun 01 2004

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified December 7 21:15 EST 2016. Contains 278895 sequences.