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 A008341 #15 Jul 08 2025 01:03:02
%S A008341 1,1,1,2,6,30,60,780,1820,15470,34034,3029026,109044936,25407470088,
%T A008341 56678202504,8643425881860,19344810307020,30893662060310940,
%U A008341 17264105268997290,72181224129677669490
%N A008341 a(n)=1, a(n+1) = lcm(a(n),b(n)) / gcd(a(n),b(n)), where {b(n)} = {fibonacci(n)}.
%p A008341 with(combinat): A008341 := proc(n) option remember; if n = 1 then 1 else lcm(A008341(n-1),fibonacci(n-1))/gcd(A008341(n-1),fibonacci(n-1)); fi; end;
%t A008341 FoldList[ LCM[ #1, #2 ]/GCD[ #1, #2 ]&, 1, Nest[ Join[ #1, {Plus@@Take[ #1, -2 ]} ]&, {1, 1}, 20 ] ]
%K A008341 nonn
%O A008341 1,4
%A A008341 _N. J. A. Sloane_
%E A008341 Mathematica Program Aug 15 1997 (_Olivier Gérard_).