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A118701 Largest prime (or power of prime) that divides the average of twin-prime pairs. 0
4, 3, 4, 9, 5, 7, 5, 9, 17, 27, 23, 25, 9, 64, 11, 19, 16, 27, 47, 13, 29, 7, 27, 11, 29, 19, 25, 103, 107, 11, 81, 137, 23, 13, 49, 17, 43, 25, 59, 13, 128, 41, 71, 43, 31, 11, 17, 121, 19, 31, 67 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
a(10)=27 since the 10th twin-prime pair is (107, 109) and 108 = 4*27.
CROSSREFS
Sequence in context: A277528 A358736 A340768 * A073254 A094177 A249453
KEYWORD
nonn
AUTHOR
Greg Huber, Jul 13 2006
STATUS
approved

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Last modified March 28 15:28 EDT 2024. Contains 371254 sequences. (Running on oeis4.)