A076556 Greatest prime divisor of n-th prime + n.

3, 5, 2, 11, 2, 19, 3, 3, 2, 13, 7, 7, 3, 19, 31, 23, 19, 79, 43, 13, 47, 101, 53, 113, 61, 127, 13, 5, 23, 13, 79, 163, 17, 173, 23, 17, 97, 67, 103, 71, 11, 223, 13, 79, 11, 7, 43, 271, 23, 31, 71, 97, 7, 61, 13, 29, 163, 47, 7, 31, 43, 71, 37, 5, 7, 383, 199, 5, 13, 419

Offset: 1

Author

Zak Seidov, Oct 19 2002

Keywords

• easy
• nonn

Crossrefs

Cf. A093572, A014688.

Programs

Mathematica

Table[FactorInteger[Prime[n]+n][[-1,1]],{n,70}] (* Harvey P. Dale, Jan 19 2015 *)