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 A376059 #16 Jul 09 2025 05:05:54
%S A376059 1,2,6,78,18330,1679962830,22578200883132834030,
%T A376059 6627077016548303724729207245056971365730,
%U A376059 922281145448518091883798423085535218757314338662318933097843039655721026758456630
%N A376059 a(n) is the denominator of the sum S(n) defined in A376058.
%F A376059 a(n+1) = Fibonacci(n+1)*a(n)^2 + a(n), with a(0) = 1.
%e A376059 The first few values of S(n) are 0, 1/2, 5/6, 77/78, 18329/18330, 1679962829/1679962830, 22578200883132834029/22578200883132834030, ...
%t A376059 RecurrenceTable[{a[n+1] == Fibonacci[n+1]*a[n]^2 + a[n], a[0] == 1}, a, {n, 0, 8}] (* _Amiram Eldar_, Sep 15 2024 *)
%Y A376059 Cf. A000045, A374663, A375516, A375531, A375532, A375781, A375522, A376048-A376058.
%K A376059 nonn,base,frac
%O A376059 0,2
%A A376059 _N. J. A. Sloane_, Sep 14 2024