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A135732
Distances to next prime associated with A135731.
1
2, 1, 3, 1, 3, 1, 3, 5, 1, 5, 3, 1, 3, 5, 5, 1, 5, 3, 1, 5, 3, 5, 7, 3, 1, 3, 1, 3, 13, 3, 5, 1, 9, 1, 5, 5, 3, 5, 5, 1, 9, 1, 3, 1, 11, 11, 3, 1, 3, 5, 1, 9, 5, 5, 5, 1, 5, 3, 1, 9, 13, 3, 1, 3, 13, 5, 9, 1, 3, 5, 7, 5, 5, 3, 5, 7, 3, 7, 9, 1, 9, 1, 5, 3, 5, 7, 3, 1, 3, 11, 7, 3, 7, 3, 5, 11
OFFSET
1,1
COMMENTS
Essentially the same as A046933. [From R. J. Mathar, Oct 28 2008]
FORMULA
Beginning with prime=2, the first n after 2 is 3 and from n=3 to next prime >n is 5, with distance from 3 to 5=2. Next n after prime=5 is 6, so that distance to next prime 7 = 1.
EXAMPLE
a(2)=3 because when n=8 (8 is next n after prime 7), next prime is 11 and distance is 3
CROSSREFS
Cf. A135731.
Sequence in context: A109704 A073407 A049994 * A342241 A322584 A356224
KEYWORD
easy,nonn
AUTHOR
Enoch Haga, Nov 26 2007
STATUS
approved