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A118723 Chen primes for which the digital root is also a Chen prime. +0
1
2, 3, 5, 7, 11, 23, 29, 41, 47, 59, 83, 101, 113, 131, 137, 149, 167, 191, 227, 239, 257, 263, 281, 293, 311, 317, 347, 353, 389, 401, 419, 443, 461, 479, 491, 509, 563, 569, 587, 599, 617, 641, 653, 659, 677, 743, 761, 797, 821, 839, 857, 887, 911, 941, 947 (list; graph; listen)
OFFSET

1,1

EXAMPLE

167 is in the sequence because (1) it is a Chen prime and (2) the digital root 5 is also a Chen prime.

CROSSREFS

Cf. A109611.

Sequence in context: A089392 A089695 A070027 this_sequence A118721 A094318 A019344

Adjacent sequences: A118720 A118721 A118722 this_sequence A118724 A118725 A118726

KEYWORD

base,nonn

AUTHOR

Luc Stevens (lms022(AT)yahoo.com), May 21 2006

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.


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