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 A074281 #14 Jul 07 2016 23:54:47
%S A074281 41,281,90481,29134601,3020733700601,313195711516578281,
%T A074281 5280544535667472291277149119296546201,
%U A074281 547497418496144666543167613835090178297001
%N A074281 Primes of the form Lucas(2*n)/3.
%C A074281 The next term has 96 digits. - _Harvey P. Dale_, Apr 29 2011.
%H A074281 Vincenzo Librandi, <a href="/A074281/b074281.txt">Table of n, a(n) for n = 1..16</a>
%H A074281 Ron Knott, <a href="http://www.maths.surrey.ac.uk/hosted-sites/R.Knott/Fibonacci/fibmaths.html#fibprimecarm">The Mathematics of the Fibonacci series</a>.
%H A074281 Ron Knott, <a href="http://www.maths.surrey.ac.uk/hosted-sites/R.Knott/Fibonacci/fibpi.html#lucas">Pi and the Fibonacci Numbers</a>.
%e A074281 Lucas(2*5)=3*41, Lucas(2*7)=3*281, Lucas(2*13)=3*90481.
%t A074281 Select[Table[LucasL[2n]/3,{n,400}],PrimeQ] (* _Harvey P. Dale_, Apr 29 2011 *)
%Y A074281 Values of n are given in A074304.
%K A074281 nonn
%O A074281 1,1
%A A074281 _Shane Findley_, Sep 21 2002