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 A075983 #15 Feb 14 2015 21:06:44
%S A075983 5,307,33191,321193,18889465931478650198741,
%T A075983 401734511064747568885490523085290650630550748445707718725843
%N A075983 Primes of the form n^5 + 4^n.
%H A075983 Charles R Greathouse IV, <a href="/A075983/b075983.txt">Table of n, a(n) for n = 1..7</a>
%t A075983 Select[Table[n^5+4^n,{n,500}],PrimeQ] (* _Harvey P. Dale_, Mar 31 2012 *)
%o A075983 (PARI) k=0; for(n=1,20,k=k+1; while(!isprime(k^5+4^k),k++); print1(k^5+4^k","))
%K A075983 nonn
%O A075983 1,1
%A A075983 _Zak Seidov_, Oct 17 2002
%E A075983 Next term has 193 digits.
%E A075983 More terms from _Ralf Stephan_, Mar 30 2003