OFFSET
1,1
EXAMPLE
For n=1, nonprime(prime(1))+1 = nonprime(2)+1 = 1+1 = 2 (prime), so a(1)=2.
For n=2, nonprime(prime(2))+2 = nonprime(3)+2 = 4+2 = 6 (composite).
For n=3, nonprime(prime(3))+3 = nonprime(5)+3 = 8+3 = 11 (prime), so a(2)=11, etc.
MAPLE
A154273 := proc(n) c := A141468(ithprime(n)) ; p := n+c ; if isprime(p) then printf("%d, ", p) ; end if; end proc: seq(A154273(n), n=1..700) ; # R. J. Mathar, May 01 2010
CROSSREFS
KEYWORD
nonn
AUTHOR
Juri-Stepan Gerasimov, Jan 06 2009
EXTENSIONS
Corrected (787 replaced by 797) and extended by R. J. Mathar, May 01 2010
STATUS
approved