The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A334308 Base phi Niven numbers: numbers divisible by the number of 1's in their base phi representation (A055778). 8
 1, 2, 6, 12, 15, 16, 18, 20, 30, 35, 36, 45, 48, 55, 60, 70, 72, 78, 84, 90, 91, 95, 96, 98, 104, 108, 132, 144, 147, 154, 168, 175, 184, 189, 208, 224, 231, 232, 245, 252, 256, 261, 264, 270, 275, 280, 282, 287, 294, 315, 322, 324, 330, 336, 340, 342, 351, 357 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Amiram Eldar, Table of n, a(n) for n = 1..10000 F. Michel Dekking, The sum of digits function of the base phi expansion of the natural numbers, arXiv:1911.10705 [math.NT], 2019. Wikipedia, Golden ratio base. EXAMPLE 6 is a term since its base phi representation is 1010.0001, and the number of 1's is 3, which is a divisor of 6. MATHEMATICA phiDigSum[1] = 1; phiDigSum[n_] := Plus @@ RealDigits[n, GoldenRatio, 2*Ceiling[ Log[GoldenRatio, n]] ][[1]]; Select[Range[360], Divisible[#, phiDigSum[#]] &] CROSSREFS Cf. A005349, A049445, A055778, A064150, A064438, A064481, A118363, A328208, A328212, A333426. Sequence in context: A152301 A152389 A114103 * A242336 A285312 A065154 Adjacent sequences:  A334305 A334306 A334307 * A334309 A334310 A334311 KEYWORD nonn,base AUTHOR Amiram Eldar, Apr 22 2020 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified September 27 08:39 EDT 2021. Contains 347689 sequences. (Running on oeis4.)