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 A087577 #12 Mar 10 2014 04:20:52
%S A087577 2,2,2,2,8,2,2,4,4,8,10,2,20,4,2,2,10,2,124,46,16,20,190,14,68,50,152,
%T A087577 2,34,2,34,122,130,208,374,46,68,64,10,28,248,4,106,230,34,208,52,34,
%U A087577 154,230,116,302,656,38,2,10,16,34,140,140,20,232,140,28,64,328,2,98,28,818
%N A087577 Smallest number k such that k^n + 3 is a prime.
%H A087577 Vincenzo Librandi, <a href="/A087577/b087577.txt">Table of n, a(n) for n = 1..200</a>
%e A087577 a(5) = 8 as 8^5 + 3= 32771 is prime, while 2^5 +3, 4^5+3 and 6^5 +3 are composite.
%t A087577 snk[n_]:=Module[{k=1},While[!PrimeQ[k^n+3],k++];k]; Array[snk,70] (* _Harvey P. Dale_, Mar 08 2014 *)
%o A087577 (PARI) for(j=1,50, for (i=1,150,if(isprime(i^j+3),print1(i,",");break())))
%Y A087577 Cf. A087576.
%K A087577 nonn
%O A087577 1,1
%A A087577 _Amarnath Murthy_, Sep 17 2003
%E A087577 More terms from Mohammed Bouayoun (bouyao(AT)wanadoo.fr), Mar 14 2004
%E A087577 More terms from _David Wasserman_, Jun 08 2005