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 A134656 #12 Mar 16 2025 21:59:26 %S A134656 2,10453,129341,157519,555097,595411,624363411431 %N A134656 Corresponding GCD values in A116894. %F A134656 a(n) = gcd(A116894(n)! + 1, A116894(n)^A116894(n) + 1) %o A134656 (PARI) for(n = 1, 10^9, my(x = gcd(n! + 1, n^n + 1)); if(x != 1 && x != 2*n + 1, print1(x, ", "))) %o A134656 (C) // See Links section in A116893. %Y A134656 Cf. A116894. %K A134656 hard,more,nonn %O A134656 1,1 %A A134656 _Ryan Propper_, Feb 01 2008 %E A134656 a(6)-a(7) from _Nick Hobson_, Feb 20 2024