A174009 Numbers n such that A174008(k)=n-th prime.

1, 4, 5, 11, 13, 16, 18, 19, 20, 25, 33, 37, 38, 39, 40, 48, 52, 59, 60, 69, 72, 73, 76, 79, 84, 85, 86, 87, 96, 98, 104, 110, 117, 122, 135, 136, 140, 142, 145, 151, 153, 160, 162, 173, 179, 183, 186, 191, 192, 199, 200, 206, 214, 218, 221, 226, 232, 234, 239, 242

Offset

1,2

Comments

n-th prime in sequence A174008.

Links

Table of n, a(n) for n=1..60.

Example

a(1)=1 because A174008(1)=2=1st prime;
a(2)=4 because A174008(2)=7=4th prime;
a(3)=5 because A174008(3)=11=5th prime;
a(4)=11 because A174008(7)=31=11th prime.

Maple

From R. J. Mathar, Apr 28 2010: (Start)
A163300 := proc(n) option remember ; if n = 1 then 0; else for a from procname(n-1)+2 by 2 do if not isprime(a) then return a ; end if; end do; end if; end proc:
A174008 := proc(n) ithprime(n)+A163300(n) ; end proc:
A174009 := proc(k) p := A174008(k) ; if isprime(p) then printf("%d, ", numtheory[pi](p) ) ; end if; return ; end proc:
seq(A174009(k), k=1..400 ) ; (End)

Crossrefs

Cf. A000040, A001477, A078916, A163300, A174008.

Sequence in context: A066828 A163098 A216562 * A370980 A379357 A039006

Adjacent sequences: A174006 A174007 A174008 * A174010 A174011 A174012

Keyword

nonn

Author

Juri-Stepan Gerasimov, Mar 05 2010

Extensions

More terms from R. J. Mathar, Apr 28 2010

Status

approved