This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A188545 Fusible numbers. 3

%I

%S 1,3,10

%N Fusible numbers.

%C Given irregular one minute fuses, the shortest amount of time that can be measured over n minutes is time(n) = n + 1/2^(fuse(n)) minutes. For example, fuse(1)=3, for 9/8 = 1 + 1/(2^fuse(1)). Over 2 minutes, time(2) = 2 + 1/(2^fuse(2)) = 2049/1024 minutes. The value for fuse(3) is larger than 2↑↑↑↑↑↑↑↑↑16, in Knuth's up-arrow notation. - _Ed Pegg Jr_, Apr 03 2011; edited by _Junyan Xu_, Jan 04 2012

%H Jeff Erickson, <a href="http://www.mathpuzzle.com/fusible.pdf">Fusible Numbers</a>, 2010.

%H Junyan Xu, <a href="http://dl.dropbox.com/u/53673505/fusible_survey.pdf">Survey on Fusible Numbers</a>, 2011.

%K nonn,hard,bref

%O 0,2

%A _Ed Pegg Jr_, Apr 03 2011

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 15 04:28 EDT 2019. Contains 327062 sequences. (Running on oeis4.)