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!)
A183544 Ordering of the numbers in the tree A183542; complement of A183545. 3

%I #9 Oct 13 2022 15:09:29

%S 1,2,4,5,7,8,9,12,13,14,15,16,20,21,22,23,24,25,26,27,33,34,35,36,37,

%T 38,39,40,41,42,43,44,45,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,

%U 69,70,71,72,73,74,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103

%N Ordering of the numbers in the tree A183542; complement of A183545.

%F The monotonic ordering of the numbers in the set S generated by these rules: 1 is in S, and if n is in S, then -2+Floor[(n+2)r] and n+Floor[(n+2)r] are in S, where r=(1+sqrt(5))/2, the golden ratio.

%t nn=200; g=(1+5^(1/2))/2; t={1}; t0=t; While[t=Select[Union[t,-2+Floor[(t+2)g], t+Floor[(t+2)g]], #<=nn&]; t0 !=t, t0=t];t

%o (Python)

%o from itertools import islice

%o def A183544_gen(): # generator of terms

%o a, b, i = 1, 1, 0

%o while True:

%o yield from (j+a for j in range(i,i+a))

%o i += a

%o a, b = b, a+b

%o A183544_list = list(islice(A183544_gen(),30)) # _Chai Wah Wu_, Oct 13 2022

%Y Cf. A183542, A183543, A183545.

%K nonn

%O 1,2

%A _Clark Kimberling_, Jan 05 2011

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 April 23 20:33 EDT 2024. Contains 371916 sequences. (Running on oeis4.)