

A225046


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


1



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
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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



