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 A353988 #11 May 16 2022 16:43:33 %S A353988 1,2,3,6,8,9,10,12,18,24,30,36,48,56,60,100,120,144,150,168,240,270, %T A353988 288,300,324,330,336,360,444,540,594,600,624,720,750,840,864,896,900, %U A353988 936,1080,1152,1200,1210,1360,1404,1632,1720,1921,2028,2400,2520,2552,2864 %N A353988 Numbers k such that Fibonacci(k) is a binary Niven number (A049445). %C A353988 Numbers k such that A011373(k) | A000045(k). %H A353988 Amiram Eldar, <a href="/A353988/b353988.txt">Table of n, a(n) for n = 1..3000</a> %e A353988 1 is a term since A000045(1) = A011373(1) = 1 and 1 | 1. %e A353988 10 is a term since A000045(10) = 55, A011373(1) = 5 and 5 | 55. %t A353988 Select[Range[3000], Divisible[(f = Fibonacci[#]), DigitCount[f, 2, 1]] &] %o A353988 (PARI) isok(k) = my(f=fibonacci(k)); ! (f % hammingweight(f)); \\ _Michel Marcus_, May 13 2022 %Y A353988 Cf. A000045, A000120, A011373, A049445, A117774, A337448 (decimal analog). %K A353988 nonn,base %O A353988 1,2 %A A353988 _Amiram Eldar_, May 13 2022