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A117242 Chen primes that are not members of twin primes. +0
1
2, 23, 37, 47, 53, 67, 83, 89, 113, 127, 131, 157, 167, 211, 233, 233, 251, 263, 293, 307, 317, 337, 353, 359, 379, 389, 401, 409 (list; graph; listen)
OFFSET

0,1

EXAMPLE

a(1) = 2, 2 is Chen number but not member of twin primes, a(2) = 23 is Chen number, but not member of twin primes.

CROSSREFS

Cf. A001097, A109611.

Sequence in context: A061448 A115233 A007510 this_sequence A144550 A106736 A045392

Adjacent sequences: A117239 A117240 A117241 this_sequence A117243 A117244 A117245

KEYWORD

nonn

AUTHOR

Jani Melik (jani_melik(AT)hotmail.com), Apr 22 2006

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.


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