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 A351916 #7 Feb 25 2022 21:20:27 %S A351916 1,1,2,129,297233651245505, %T A351916 1588898389043626055434220300433167237829218942966252641093888571632886068535351219199489258571766594 %N A351916 a(1) = a(2) = 1; for n >= 2, a(n+1) = (a(n)^7 + 1)/a(n-1). %C A351916 a(7) has 680 digits. %p A351916 a:=proc(n) option remember: if n <= 2 then 1: else (a(n-1)^7+1)/a(n-2): fi: end: %Y A351916 Cf. A076839, A003819, A003818, A003821. %K A351916 nonn %O A351916 1,3 %A A351916 _Robert Dougherty-Bliss_, Feb 25 2022