This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A178764 Ratio of the primitive part of Fibonacci(n) to the product of primitive prime factors of Fibonacci(n). 4
 1, 1, 1, 1, 1, 4, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 13, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,6 COMMENTS Except for a(6), it can be shown that all terms are either 1 or prime. In the first 10^5 terms, only 151 are greater than 1. LINKS T. D. Noe, Table of n, a(n) for n=1..10000 Florian Luca, Carl Pomerance, and Stephen Wagner, Fibonacci Integers (preprint) FORMULA a(n) = A061446(n) / A178763(n). CROSSREFS Sequence in context: A204160 A184101 A164561 * A070010 A293768 A046564 Adjacent sequences:  A178761 A178762 A178763 * A178765 A178766 A178767 KEYWORD nonn AUTHOR T. D. Noe, Jun 10 2010 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 17 22:53 EDT 2019. Contains 327147 sequences. (Running on oeis4.)