OFFSET
1,1
LINKS
Jens Kruse Andersen, Table of n, a(n) for n = 1..10000
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.
MATHEMATICA
Differences[Table[Prime[Prime[n]], {n, 1, 100}], 2] (* Jean-François Alcover, Oct 09 2018 *)
PROG
(PARI) f(n) = 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