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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A122791 Decimal expansion of the average "dropping time" of the reduced 3x+1 iteration. 1
3, 4, 9, 2, 6, 5, 1, 8, 5, 2, 1, 8, 6, 4, 2, 4, 9, 1, 2, 3, 0, 5, 5, 6, 0, 3, 3, 7, 5, 2, 9, 6, 8, 0, 6, 4, 7, 4, 2, 7, 2, 9, 0, 5, 3, 4, 8, 0, 9, 0, 9, 9, 9, 0, 5, 3, 0, 9, 1, 4, 7, 4, 5, 2, 2, 2, 2, 3, 3, 8, 4, 4, 0, 7, 2, 0, 8, 2, 7, 6, 0, 5, 9, 1, 8, 7, 0, 2, 2, 8, 5, 5, 1, 9, 1, 0, 3, 4, 6, 7, 5, 4, 8, 1, 4 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..105.

FORMULA

Sum{k>0} k*A100982(k)/2^(A020914(k)-1) = 3.49265185218642491230556033752968...

CROSSREFS

Cf. A122458 (dropping time of the reduced Collatz iteration), A100982, A122790.

Sequence in context: A246726 A019900 A290373 * A011429 A225409 A083437

Adjacent sequences:  A122788 A122789 A122790 * A122792 A122793 A122794

KEYWORD

cons,nonn

AUTHOR

T. D. Noe, Sep 11 2006

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 June 16 12:38 EDT 2019. Contains 324152 sequences. (Running on oeis4.)