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 A301644 #12 Sep 04 2018 16:36:55
%S A301644 13,769,139969,30000000001
%N A301644 Primes of form 3*k^k + 1.
%C A301644 The next term is too large to include.
%C A301644 The next term (a(5)) has 703 digits. - _Harvey P. Dale_, Sep 04 2018
%F A301644 a(n) = 3*(2*A160600(n))^(2*A160600(n)) + 1.
%t A301644 Select[Table[3*k^k+1,{k,500}],PrimeQ] (* _Harvey P. Dale_, Sep 04 2018 *)
%Y A301644 Primes of form b*k^k + 1: A121270 (b=1), A216148 (b=2), this sequence (b=3), A301641 (b=4), A301642 (b=16).
%Y A301644 Cf. A160600.
%K A301644 nonn
%O A301644 1,1
%A A301644 _Seiichi Manyama_, Mar 25 2018