OFFSET
1,1
LINKS
Alois P. Heinz, Table of n, a(n) for n = 1..10000 (first 1000 terms from Jens Kruse Andersen)
R. G. Batchko, A prime fractal and global quasi-self-similar structure in the distribution of prime-indexed primes, arXiv preprint arXiv:1405.2900, 2014. See Table 2.
MAPLE
a:= ((f-> n-> f(n+1)-f(n))@@2)(ithprime@@3):
seq(a(n), n=1..60);
MATHEMATICA
Differences[Nest[Prime, Range[60], 3], 2] (* Jean-François Alcover, Oct 06 2018 *)
PROG
(PARI) f(n) = prime(prime(prime(n)))
a(n) = f(n+2)-2*f(n+1)+f(n)
vector(50, n, a(n)) \\ Jens Kruse Andersen, Jul 18 2014
CROSSREFS
KEYWORD
sign
AUTHOR
N. J. A. Sloane, Jul 17 2014
STATUS
approved