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 A117047 #9 Feb 16 2024 16:14:38
%S A117047 11,71,131,191,251,311,431,491,911,971,1031,1091,1151,1451,1511,1571,
%T A117047 1811,1871,1931,2111,2351,2411,2531,2591,2711,3011,3191,3251,3371,
%U A117047 3491,3671,3851,3911,4091,4211,4271,4391,4451,4691,4751,4871,4931,5051,5171
%N A117047 Primes of the form 60*n+11.
%C A117047 a(n) = A211890(5,n-1) for n <= 6. - _Reinhard Zumkeller_, Jul 13 2012
%H A117047 Reinhard Zumkeller, <a href="/A117047/b117047.txt">Table of n, a(n) for n = 1..1000</a>
%t A117047 Flatten[Table[If[PrimeQ[60*n + 11], 60*n + 11, {}], {n, 0, 100}]]
%t A117047 Select[60Range[0,100]+11,PrimeQ] (* _Harvey P. Dale_, Feb 16 2024 *)
%o A117047 (Haskell)
%o A117047 a117047 n = a117047_list !! (n-1)
%o A117047 a117047_list = [x | k <- [0..], let x = 60 * k + 11, a010051' x == 1]
%o A117047 -- _Reinhard Zumkeller_, Jul 13 2012
%Y A117047 Cf. A007528, A132231, A214360, A010051.
%K A117047 nonn
%O A117047 1,1
%A A117047 _Roger L. Bagula_, Apr 17 2006
%E A117047 Wrong formula removed by _Reinhard Zumkeller_, Jul 13 2012