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

Author

Enoch Haga, Nov 26 2007

Keywords

• easy
• nonn

Comments

Essentially the same as A046933. [From R. J. Mathar, Oct 28 2008]

Examples

			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.

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.