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 A258944 #20 Jan 21 2023 02:43:44 %S A258944 31,373,6855730873 %N A258944 Odd primes p that divide 2! + 3! + ... + (p-1)!. %C A258944 In other words, the odd primes p that divide A003422(p) - 2. Or the primes p with A049782(p) = 2. %C A258944 Andrejic and Tatarevic found a(3). %H A258944 Vladica Andrejic and Milos Tatarevic, <a href="http://arxiv.org/abs/1409.0800">Searching for a counterexample of Kurepa's Conjecture</a>, arXiv:1409.0800 [math.NT], 2014. %o A258944 (PARI) forprime(p=3, 1e11, if(sum(k=2, p-1, k!) % p==0, print1(p, ", "))); \\ _Altug Alkan_, Nov 08 2015 %Y A258944 Cf. A003422, A049782, A100612. %K A258944 nonn,hard,more %O A258944 1,1 %A A258944 _Jeppe Stig Nielsen_, Nov 07 2015