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 A287821 #9 Jun 02 2017 13:00:30 %S A287821 2,3,4,3,5,4,6,4,5,4,7,5,6,4,5,8,6,5,7,4,5,6,9,4,7,6,8,5,6,5,7,4,10,5, %T A287821 8,6,7,9,6,5,7,6,4,8,11,5,6,5,9,7,8,4,10,7,6,5,8,6,7,5,9,12,5,7,6,4, %U A287821 10,8,7,9,11,5,8,6,7,6,9,7,8,6,10,5,13,7,6 %N A287821 a(n) is the index of the largest Fibonacci number A065108(n) is divisible by. %H A287821 David A. Corneth, <a href="/A287821/b287821.txt">Table of n, a(n) for n = 1..10000</a> %e A287821 A065108(7) = 8 is divisible by fibonacci(6) = 8 and by no larger Fibonacci number. Therefore, a(7) = 6. %Y A287821 Cf. A065108. %K A287821 nonn %O A287821 1,1 %A A287821 _David A. Corneth_, Jun 01 2017