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 A110932 #25 Mar 12 2023 08:48:43
%S A110932 0,1,12,18,251,82992
%N A110932 Numbers k such that 2*k^k + 1 is prime.
%C A110932 As a "list of numbers such that ...", the sequence should have offset 1, but to preserve the validity of formulas referring to this sequence, the offset was set to 0 when the initial value a(0)=0 was added. - _M. F. Hasler_, Sep 02 2012
%t A110932 Join[{0}, Select[Range[1000], PrimeQ[2*#^# + 1] &]] (* _Robert Price_, Mar 27 2019 *)
%o A110932 (PARI) is_A110932(n)=ispseudoprime(n^n*2+1) \\ _M. F. Hasler_, Sep 02 2012
%Y A110932 Cf. A110931, A121270 (= primes in A014566), A088790, A160360, A160600.
%Y A110932 The primes 2n^n+1, for k<4, n=a(k)<251, are listed at A216148(k) = A216147(a(k)). - _M. F. Hasler_, Sep 02 2012
%K A110932 nonn,hard,more
%O A110932 0,3
%A A110932 _Ray G. Opao_, Sep 25 2005
%E A110932 a(5) from _Serge Batalov_, Apr 08 2018