A163389 The position of first occurrence of n-th prime in A014085.

1, 4, 10, 16, 39, 45, 57, 82, 79, 117, 134, 192, 193, 218, 240, 256, 284, 343, 359, 415, 386, 467, 484, 501, 550, 627, 595, 739, 612, 724, 815, 785, 872, 868, 1007, 998, 1064, 1154, 1086, 1134, 1173, 1181, 1260, 1304, 1357, 1291, 1515, 1502, 1545, 1638, 1590

Offset

1,2

Links

Table of n, a(n) for n=1..51.

Example

The first ten terms of A014085 are 2,2,2,3,2,4,3,4,3,5. prime(1) = 2 is the first element, prime(2) = 3 is the 4th element, prime(3)= 5 is the 10th element; so 1,4,10 are the first three elements of this sequence.

Prog

(PARI) f(n) = primepi((n+1)^2)-primepi(n^2); \\ A014085
a(n) = my(k=1, p=prime(n)); while(f(k) != p, k++); k; \\ Michel Marcus, Aug 16 2022

Crossrefs

Cf. A014085.

Sequence in context: A069982 A009883 A333904 * A172126 A025621 A056486

Adjacent sequences: A163386 A163387 A163388 * A163390 A163391 A163392

Keyword

nonn

Author

Daniel Tisdale, Jul 26 2009

Extensions

Extended by Ray Chandler, May 10 2010

Status

approved