This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A076556 #7 Jan 19 2015 16:34:46
%S A076556 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,
%T A076556 127,13,5,23,13,79,163,17,173,23,17,97,67,103,71,11,223,13,79,11,7,43,
%U A076556 271,23,31,71,97,7,61,13,29,163,47,7,31,43,71,37,5,7,383,199,5,13,419
%N A076556 Greatest prime divisor of n-th prime + n.
%t A076556 Table[FactorInteger[Prime[n]+n][[-1,1]],{n,70}] (* _Harvey P. Dale_, Jan 19 2015 *)
%Y A076556 Cf. A093572, A014688.
%K A076556 easy,nonn
%O A076556 1,1
%A A076556 _Zak Seidov_, Oct 19 2002