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 A075781 #7 Oct 03 2013 02:40:28
%S A075781 2,11,13,31,59,113,313,349,659,821,1493,1571,1733,3209,3323,5569,7331,
%T A075781 7853,10531,13367,17321,21493,21787,25793,30137,31541,36709,39043,
%U A075781 39439,44771,46049,49991,55147,55501,56923,57881,58363,59333,65323
%N A075781 Primes of the form perfect_power(n)+n.
%e A075781 11 is OK: 11 = perfect_power(3) + 3 = 8 + 3, perfect_power(n) is n-th perfect power: A001597(n).
%e A075781 31 is OK: 31 = perfect_power(6) + 6 = 25 + 6; 59 is OK: 59 = perfect_power(10) + 10 = 49 + 10.
%o A075781 (PARI) lista(nn) = {vec = vector(nn, i, i); pp = select(i->((ispower(i) || (i==1))), vec); for (i = 1, #pp, if (isprime(pp[i]+i), print1(pp[i]+i, ", ")););} \\ _Michel Marcus_, Oct 03 2013
%Y A075781 Cf. A001597.
%K A075781 nonn
%O A075781 1,1
%A A075781 _Zak Seidov_, Oct 10 2002