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 A076555 #6 Sep 05 2014 16:32:52 %S A076555 2,5,7,3,13,5,19,7,5,31,11,13,43,5,7,11,61,7,23,73,5,3,17,13,11,103,7, %T A076555 109,37,23,43,19,139,47,151,17,53,11,13,7,181,61,193,13,199,67,71,5, %U A076555 229,11,47,241,3,23,37,53,271,13,31,283,19,59,103,313,7,29,37,113,349 %N A076555 Greatest prime divisor of n-th prime + 2. %C A076555 Greatest prime divisor of n-th prime + 1 in A023509. Greatest prime divisor of n-th prime + 3 in A023576. %H A076555 Harvey P. Dale, <a href="/A076555/b076555.txt">Table of n, a(n) for n = 1..1000</a> %t A076555 FactorInteger[#][[-1,1]]&/@(Prime[Range[70]]+2) (* _Harvey P. Dale_, Sep 05 2014 *) %Y A076555 Cf. A023509, A023576. %K A076555 easy,nonn %O A076555 1,1 %A A076555 _Zak Seidov_, Oct 19 2002