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 A289947 #30 Feb 16 2025 08:33:49
%S A289947 5,34,102
%N A289947 Values of n for which Sum_{k=1..n} k!^6 is prime.
%C A289947 A289946(n) is divisible by 1091 for n >= 1090, and checking the terms below that gives A289946(a(3)) = A289946(102) as the final prime in the sequence.
%H A289947 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/FactorialSums.html">Factorial Sums</a>
%H A289947 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/IntegerSequencePrimes.html">Integer Sequence Primes</a>
%e A289947 A289946(5) = 2986175149697 is prime.
%o A289947 (PARI) isok(n) = isprime(sum(k=1, n, k!^6)); \\ _Michel Marcus_, Jul 17 2017
%Y A289947 Cf. A289946 (Sum_{k=1..n} k!^6).
%Y A289947 Cf. A100289 (k!^2), A290014 (k!^10).
%K A289947 nonn,bref,full,fini
%O A289947 1,1
%A A289947 _Eric W. Weisstein_, Jul 16 2017