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A135833 Number of Section I primes between 2^n and 2^(n+1). See A135832. +0
3
1, 2, 2, 4, 5, 7, 9, 13, 18, 21, 28, 43, 56, 62, 72, 94, 133, 142, 187, 241, 313, 376 (list; graph; listen)
OFFSET

1,2

COMMENT

Comparing these numbers with A036378, the number of primes between 2^n and 2^(n+1), leads one to conjecture that the density of Section I primes is 0.

EXAMPLE

3; 5, 7; 11, 13; 17, 23, 29, 31; 41, 47, 53, 59, 61; 83,...

CROSSREFS

Cf. A092878 (number of odd numbers in Section I).

Sequence in context: A094362 A000726 A128663 this_sequence A137200 A026930 A098859

Adjacent sequences: A135830 A135831 A135832 this_sequence A135834 A135835 A135836

KEYWORD

nonn

AUTHOR

T. D. Noe (noe(AT)sspectra.com), Nov 30 2007

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.


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