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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A139227 Array read by rows: row n lists the proper divisors of n-th Fibonacci number A000045(n). 0
1, 1, 1, 1, 2, 4, 1, 1, 3, 7, 1, 2, 17, 1, 5, 11, 1, 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 1, 1, 13, 29, 1, 2, 5, 10, 61, 122, 305, 1, 3, 7, 21, 47, 141, 329, 1, 1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 646, 1292 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

3,5

LINKS

Table of n, a(n) for n=3..67.

EXAMPLE

Row ....... Array begins

===========================================================

3 ......... 1

4 ......... 1

5 ......... 1

6 ......... 1, 2, 4

7 ......... 1

8 ......... 1, 3, 7

9 ......... 1, 2, 17

10 ........ 1, 5, 11

11 ........ 1

12 ........ 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72

13 ........ 1

MATHEMATICA

f[n_] := Most@ Divisors@ Fibonacci@ n; Flatten@ Array[f, 16, 3] (* Robert G. Wilson v *)

CROSSREFS

Cf. A000045, A133021, A139044, A139045.

Sequence in context: A074749 A194524 A117136 * A269750 A292495 A065626

Adjacent sequences:  A139224 A139225 A139226 * A139228 A139229 A139230

KEYWORD

easy,nonn,tabl

AUTHOR

Omar E. Pol, Apr 28 2008

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 16 22:04 EDT 2021. Contains 343955 sequences. (Running on oeis4.)