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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A230697 Length of shortest addition-multiplication chain for n. 0

%I

%S 0,1,2,2,3,3,4,3,3,4,4,4,5,5,4,3,4,4,5,4,5,5,6,4,4,5,4,5,5,5,6,4,5,5,

%T 5,4,5,5,5,5,6,5,6,6,5,6,6,5,5,5,6,6,6,5,6,6,6,6,7,5,6,6,6,4,5,5,6,5,

%U 6,6,7,5,6,6,5,6,6,6,7,5,4,5,5,5,6,6,6,6,6,5,6,6,6,7,7,5,6,6,5,5,6,6,6,6,6,6,7,5,6,6,6,6,7,6,7,6,6,7,7,6,5,6,6,6,5,6,6,5,6,6

%N Length of shortest addition-multiplication chain for n.

%H H. M. Bahig, <a href="http://dx.doi.org/10.1016/j.disc.2007.04.015">On a generalization of addition chains: Addition-multiplication chains</a>, Discrete Mathematics 308 (2008), 611-616

%e A shortest addition-multiplication chain for 16 is (1,2,4,16), of length 3.

%Y Cf. A003313, A128998, A173419, A005245

%K nonn

%O 1,3

%A _Harry Altman_, Oct 27 2013

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 March 20 21:49 EDT 2019. Contains 321352 sequences. (Running on oeis4.)