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 A176195 #6 Jul 07 2017 14:11:50
%S A176195 2,3,5,2,7,5,3,7,19,3,31,19,5,31,3,5,131,3,53,131,7,53,37,7,449,37,
%T A176195 1453,449,2351,1453,317,2351,1231,317,433,1231,1151,433,2897,1151,
%U A176195 42187,2897,3413,42187,5813,3413,839,5813,144577,839,6983,144577,503,6983,991,503,1981891
%N A176195 Largest prime factor of A174562(n).
%t A176195 FactorInteger[#][[-1,1]]&/@LinearRecurrence[{0,1,0,1},{2,3,5,2},60] (* _Harvey P. Dale_, Jul 07 2017 *)
%Y A176195 Cf. A174562.
%K A176195 nonn
%O A176195 1,1
%A A176195 _Giovanni Teofilatto_, Apr 11 2010
%E A176195 More terms from _R. J. Mathar_, Aug 23 2010