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A084442
Primes that can be written uniquely as 1+p+p^k, p prime and k>0.
2
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
OFFSET
1,1
COMMENTS
A084440(a(n))=1; subset of A084441; safe primes (A005385) are a subset.
CROSSREFS
Sequence in context: A162174 A171603 A118915 * A023270 A279765 A308196
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, May 26 2003
EXTENSIONS
Corrected by T. D. Noe, Oct 25 2006
STATUS
approved