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 A233285 #9 Dec 17 2013 09:18:09 %S A233285 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 A233285 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 A233285 2,1,1,4,1,1,2,1,1,2,1,1,2,1,1,4,1,1,2,1,1,2,1,1,2,1,1,4,1,1,2,1,1,2,1,1,2,1,1,4,1,1,2,1,1,2,1,1,2,1,1,7 %N A233285 a(n) = largest m such that m! divides n-th Fibonacci number; a(n) = A055881(A000045(n)). %C A233285 The lengths of palindromic prefixes begin as: %C A233285 1, 2, 5, 8, 11, 23, 35, 47, 59, 119, 239, 359, 479, 959, 1439, 1919, ... %C A233285 +1 results: 2, 3, 6, 9, 12, 24, 36, 48, 60, 120, 240, 360, 480, 960, 1440, 1920, ... %H A233285 Antti Karttunen, <a href="/A233285/b233285.txt">Table of n, a(n) for n = 1..12600</a> %Y A233285 Differs from A233284 for the first time at n=120, where a(120)=7, while A233284(120)=12. %Y A233285 Cf. A055881, A000045, A001175-A001177, A233283, A233281. %K A233285 nonn %O A233285 1,3 %A A233285 _Antti Karttunen_, Dec 06 2013