A135732 Distances to next prime associated with A135731.

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]

Links

Table of n, a(n) for n=1..96.

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

Adjacent sequences: A135729 A135730 A135731 * A135733 A135734 A135735

Keyword

easy,nonn

Author

Enoch Haga, Nov 26 2007

Status

approved