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A101043 A101042 sorted. There exists a prime p for which a(n) is the smallest positive d such that p is the smallest prime where p+d is also prime. 5
1, 2, 6, 22, 88, 112, 116, 202, 242, 284, 470, 718, 772, 1326, 1328, 1334, 1642, 1732, 1762, 2402, 2558, 3274, 5246, 5888, 7094, 7702, 7984, 9512, 9952, 9974, 10342, 10532, 12688, 13528, 16766, 25678, 25708, 37666, 59894, 60458, 61756, 62156 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Except for n=1, A020483(a(n)/2) is the first appearance of a prime in A020483.
LINKS
Mike Oakes, Ed Pegg Jr, Jens Kruse Andersen, Prime gaps (not necessarily consecutive), digest of 5 messages in primenumbers Yahoo group, Nov 26 - Nov 27, 2004. [Cached copy]
EXAMPLE
d=6 is in the sequence because there exists the prime p=5 satisfying the required conditions: 2+6, 3+6 is composite and 5+6 is prime. 6 is the smallest such number.
CROSSREFS
Sequence in context: A150261 A308409 A150262 * A101046 A363811 A150263
KEYWORD
nonn
AUTHOR
Jens Kruse Andersen, Nov 28 2004
STATUS
approved

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Last modified August 30 04:38 EDT 2024. Contains 375526 sequences. (Running on oeis4.)