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 A124787 #11 Jan 14 2025 14:35:10
%S A124787 3,11,17,89,2305777
%N A124787 Primes p such that p divides the Wolstenholme number A007408((p+1)/2).
%o A124787 (PARI) {s=0;h=1;forprime(p=3,2400000,q=(p+1)/2;s=s+sum(k=h,q,1/k^3);if(numerator(s)%p==0,print1(p,","));h=q+1)} \\ _Klaus Brockhaus_, Nov 10 2006
%Y A124787 Cf. A007408 (Wolstenholme numbers).
%K A124787 nonn,more
%O A124787 1,1
%A A124787 _Alexander Adamchuk_, Nov 07 2006
%E A124787 a(5) from _Klaus Brockhaus_, Nov 10 2006