login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A004687 Fibonacci numbers written in base 4. 2
0, 1, 1, 2, 3, 11, 20, 31, 111, 202, 313, 1121, 2100, 3221, 11321, 21202, 33123, 120331, 220120, 1001111, 1221231, 2223002, 10110233, 12333301, 23110200, 102110101, 131220301, 233331002, 1031211303, 1331202311 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

MATHEMATICA

bf[n_, k_]:=Module[{s=ToString[BaseForm[n, k]]}, ToExpression[StringDrop[s, {Part[StringPosition[s, "\n"], 1, 1], -1}]]] lst={}; Do[f=bf[Fibonacci[n], 4]; AppendTo[lst, f], {n, 0, 4*4!}]; lst (* Vladimir Joseph Stephan Orlovsky, Jun 17 2009 *)

FromDigits[IntegerDigits[#, 4]]&/@Fibonacci[Range[0, 30]] (* Harvey P. Dale, Jun 24 2011 *)

PROG

(PARI) vector(50, n, n--; fromdigits(digits(fibonacci(n), 4))) \\ G. C. Greubel, Oct 09 2018

(Magma) [Seqint(Intseq(Fibonacci(n), 4)): n in [0..50]]; // G. C. Greubel, Oct 09 2018

CROSSREFS

Cf. A000045 (Fibonacci), A007090 (numbers in base 4).

Sequence in context: A129668 A086791 A291633 * A097895 A298351 A023182

Adjacent sequences: A004684 A004685 A004686 * A004688 A004689 A004690

KEYWORD

nonn,base,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 3 11:54 EST 2022. Contains 358521 sequences. (Running on oeis4.)