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A084442 Primes that can be written uniquely as 1+p+p^k, p prime and k>0. +0
3
5, 13, 19, 23, 47, 59, 67, 83, 107, 167, 179, 227, 263, 307, 347, 359, 383, 467, 479, 503, 563, 587, 631, 719, 733, 839, 863, 887, 983, 1019, 1187, 1283, 1307, 1319, 1367, 1439, 1487, 1523, 1619, 1723, 1823, 1907, 2027, 2039, 2063, 2099, 2207, 2447, 2459 (list; graph; listen)
OFFSET

1,1

COMMENT

A084440(a(n))=1; subset of A084441; safe primes (A005385) are a subset.

CROSSREFS

Adjacent sequences: A084439 A084440 A084441 this_sequence A084443 A084444 A084445

Sequence in context: A028274 A067463 A118915 this_sequence A023270 A103804 A129919

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 26 2003

EXTENSIONS

Corrected by T. D. Noe (noe(AT)sspectra.com), Oct 25 2006

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Last modified October 15 09:18 EDT 2008. Contains 145015 sequences.


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