login
This site is supported by donations to The OEIS Foundation.

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A172150 Smallest Fibonacci number divisible by 2^(2*n). 1
8, 144, 4807526976, 5972304273877744135569338397692020533504 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The next term has 161 digits.

LINKS

Table of n, a(n) for n=1..4.

EXAMPLE

f(12)=144=2^4*3^2,

f(48)=4807526976=2^6*3^2*7*23*47*1103,

f(192)=2^8*3^2*7*23*47*769*1087*1103*2207*..,

f(768)=2^10*3^2*7*23*47*127*383*..,..

MATHEMATICA

lst={8}; k=12; Do[AppendTo[lst, Fibonacci[k]]; k*=4, {n, 5}]; lst

CROSSREFS

Cf. A000045, A172145

Sequence in context: A111687 A231851 A071305 * A105046 A123812 A064331

Adjacent sequences:  A172147 A172148 A172149 * A172151 A172152 A172153

KEYWORD

nonn

AUTHOR

Vladimir Joseph Stephan Orlovsky, Nov 19 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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 10 15:09 EST 2019. Contains 329896 sequences. (Running on oeis4.)