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A096832 Number of primes in enlarged neighborhood with center=n-th-primorial and radius=2*Ceiling[Log[n-th-primorial]]. So compared to A096831, the radius is doubled. +0
1
2, 4, 4, 2, 3, 4, 1, 2, 1, 1, 1, 1, 3, 3, 1, 4, 2, 1, 4, 1, 2, 4, 1, 7, 1, 4, 2, 3, 0, 2, 3, 3, 0, 1, 6, 2, 1, 2, 4, 2, 3, 2, 2, 0, 3, 0, 2, 5, 3, 3, 1, 5, 2, 6, 3, 4, 3, 2, 2, 4, 2, 4, 1, 4, 7, 5, 2, 7, 1, 3, 2, 2, 6, 6, 3, 1, 3, 5, 4, 1, 4, 5, 6, 2, 5, 2, 4, 2, 0, 6, 1, 3, 5, 2, 5, 4, 4, 4, 3, 4, 3, 1, 3, 2, 4 (list; graph; listen)
OFFSET

1,1

COMMENT

What is exceptional in such neighborhoods of primorials, that in most cases no primes occur, i.e. these zones are peculiarly poor or empty of primes! If radius is doubled then density of primes appears to be "normal".

EXAMPLE

n=7:7th/primorial=510510,if radius=14,no primes in the relevant neighborhood. If radius=28, then one prime appear: 510529

CROSSREFS

Cf. A096509-A096523, A096830-A096840; A002110.

Adjacent sequences: A096829 A096830 A096831 this_sequence A096833 A096834 A096835

Sequence in context: A108620 A070512 A126123 this_sequence A016588 A122592 A099264

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Jul 14 2004

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.


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