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!)
A057525 Number of applications of f to reduce n to 1, where f(k) is the integer among k/2,(k+1)/4, (k+3)/4. 0
1, 1, 2, 2, 2, 2, 3, 2, 3, 2, 3, 3, 3, 3, 4, 3, 3, 3, 4, 3, 3, 3, 4, 3, 4, 3, 4, 4, 4, 4, 5, 3, 4, 3, 4, 4, 4, 4, 5, 3, 4, 3, 4, 4, 4, 4, 5, 4, 4, 4, 5, 4, 4, 4, 5, 4, 5, 4, 5, 5, 5, 5, 6, 4, 4, 4, 5, 4, 4, 4, 5, 4, 5, 4, 5, 5, 5, 5, 6, 4, 4, 4, 5, 4, 4, 4, 5, 4, 5, 4 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,3

LINKS

Table of n, a(n) for n=2..91.

EXAMPLE

a(11)=3, which counts these reductions: 11->4->2->1.

CROSSREFS

Sequence in context: A108502 A260235 A078120 * A331362 A139325 A216325

Adjacent sequences:  A057522 A057523 A057524 * A057526 A057527 A057528

KEYWORD

nonn

AUTHOR

Clark Kimberling, Sep 03 2000

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 January 26 11:07 EST 2020. Contains 331279 sequences. (Running on oeis4.)