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 A240548 #11 Apr 08 2014 03:02:38
%S A240548 2,11,61,41,521,101,191,331,1181,9091,13421,19141,2411,101,1531,61681,
%T A240548 101,9041,2251,152381,185641,224071,211,5791,9161,1021,271,53951,401,
%U A240548 71261,21821,4051,1151041,259631,132631,6781,1824841,2031671,41011,20641,4111,23201
%N A240548 Greatest prime factor of n^5 + 1.
%H A240548 T. D. Noe, <a href="/A240548/b240548.txt">Table of n, a(n) for n = 1..10000</a>
%e A240548 a(2) = 11 because 2^5 + 1 = 33 = 3 * 11.
%e A240548 a(3) = 61 because 3^5 + 1 = 244 = 2^2 * 61.
%e A240548 a(4) = 41 because 4^5 + 1 = 1025 = 5^2 * 41.
%e A240548 a(2272) = 2273 because 2272^5 + 1 = 11^2 * 311 * 491 * 1171 * 1231 * 2273.
%t A240548 Table[FactorInteger[n^5 + 1][[-1, 1]], {n, 100}]
%Y A240548 Cf. A002561, A014442, A081256, A096172, A240549-A240553.
%K A240548 nonn
%O A240548 1,1
%A A240548 _T. D. Noe_, Apr 07 2014