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 A233284 #14 Aug 11 2018 22:02:02 %S A233284 1,1,2,1,1,2,1,1,2,1,1,4,1,1,2,1,1,2,1,1,2,1,1,4,1,1,2,1,1,2,1,1,2,1, %T A233284 1,4,1,1,2,1,1,2,1,1,2,1,1,4,1,1,2,1,1,2,1,1,2,1,1,6,1,1,2,1,1,2,1,1, %U A233284 2,1,1,4,1,1,2,1,1,2,1,1,2,1,1,4,1,1,2,1,1,2,1,1,2,1,1,4,1,1,2,1,1,2,1,1,2,1,1,4,1,1,2,1,1,2,1,1,2,1,1,12 %N A233284 a(n) = largest m such that 1, 2, ..., m divide n-th Fibonacci number; a(n) = A055874(A000045(n)). %C A233284 It seems that the records occur at the positions given by A233283: 1, 3, 12, 60, 120, 840, 2520, 12600, ... %C A233284 The corresponding record values begin as 1, 2, 4, 6, 12, 16, 24, 36, ... (maybe A007416?). %H A233284 Antti Karttunen, <a href="/A233284/b233284.txt">Table of n, a(n) for n = 1..12600</a> %Y A233284 Differs from A233285 for the first time at n=120, where a(120)=12, while A233285(120)=7. %Y A233284 Cf. A055874, A000045, A001175-A001177, A233283, A007416. %K A233284 nonn %O A233284 1,3 %A A233284 _Antti Karttunen_, Dec 12 2013