login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A081883 Numbers n such that the number of steps needed to reach an integer starting with n-1/4 or n+1/4 and iterating the map x-->x*ceiling(x) is the same. 0

%I

%S 5,9,21,37,46,49,53,69,85,101,113,117,121,133,137,149,165,174,177,181,

%T 197,213,217,229,241,245,261,265,277,293,302,305,309,313,325,341,357,

%U 369,373,389,393,405,421,430,433,437,441,453,469,485,497,501,517,521

%N Numbers n such that the number of steps needed to reach an integer starting with n-1/4 or n+1/4 and iterating the map x-->x*ceiling(x) is the same.

%Y Cf. A068119.

%K nonn

%O 1,1

%A _Benoit Cloitre_, Apr 13 2003

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 22 14:14 EDT 2022. Contains 353953 sequences. (Running on oeis4.)