OFFSET
1,1
COMMENTS
LINKS
M. F. Hasler, Table of n, a(n) for n = 1..1000
FORMULA
a(n) ~ 2n log(n) log(2n log(n)) ~ 2n (log n)^2.
EXAMPLE
a(3) = 29 because the third prime is 5, and 2 * 5 = 10, and then we see that the tenth prime is 29.
a(4) = 43 because the fourth prime is 7, and 2 * 7 = 14, and then we see that the fourteenth prime is 43.
MATHEMATICA
Prime[2Prime[Range[50]]] (* Alonso del Arte, Oct 19 2013 *)
PROG
(PARI) A230460=n->prime(2*prime(n))
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
M. F. Hasler, Oct 19 2013
STATUS
approved