A225046 Position of the first occurrence of the n-th prime in A225017, or 0 if prime(n) never occurs.

2, 5, 4, 14, 6, 7, 16, 21, 23, 24, 57, 122, 32, 19, 20, 22, 186, 177, 26, 29, 27, 61, 236, 34, 160, 36, 78, 54, 194, 41, 87, 43, 44, 188, 253, 55, 118, 229, 66, 59, 70, 69, 60, 58, 569, 279, 147, 81, 610, 74, 325, 85, 101, 75, 179, 459, 369, 100, 97, 463, 91

Offset

4,1

Comments

It appears that a large fraction of terms are relatively small, say a(n)<2*n, but they can be rather large. For example, prime(156)=911 occurs first at n=14424 in A225017, so a(156) = 14424.

Links

Alois P. Heinz, Table of n, a(n) for n = 4..240

Example

A225017 begins {1,1,7,1,13,11,...}, with offset 0, and the 4th prime 7 occurs for the first time at A225017(2)=7, so a(4)=2.  11 occurs for the first time at n=5, so a(5)=5.

Crossrefs

Cf. A225017.

Sequence in context: A298585 A102468 A252668 * A079053 A224272 A189942

Adjacent sequences: A225043 A225044 A225045 * A225047 A225048 A225049

Keyword

nonn

Author

John W. Layman, Apr 25 2013

Status

approved