This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A228731 Number of independent subsets in the rooted tree with Matula-Goebel number n that contain the root. 3

%I

%S 1,1,2,1,3,2,4,1,4,3,5,2,6,4,6,1,5,4,8,3,8,5,9,2,9,6,8,4,10,6,8,1,10,

%T 5,12,4,12,8,12,3,8,8,10,5,12,9,15,2,16,9,10,6,16,8,15,4,16,10,9,6,18,

%U 8,16,1,18,10,9,5,18,12,20,4,15,12,18,8,20,12

%N Number of independent subsets in the rooted tree with Matula-Goebel number n that contain the root.

%C A184165(n) = a(n) + A228732(n);

%C this sequence and A228732 are defined by a pair of mutually recursive functions, see A184165 for definition (called b and c there).

%H Reinhard Zumkeller, <a href="/A228731/b228731.txt">Table of n, a(n) for n = 1..10000</a>

%H <a href="/index/Mat#matula">Index entries for sequences related to Matula-Goebel numbers</a>

%F Completely multiplicative with a(prime(t)) = A228732(t). - _Andrew Howroyd_, Aug 01 2018

%Y Cf. A184165, A228732.

%K nonn,mult

%O 1,3

%A _Emeric Deutsch_ and _Reinhard Zumkeller_, Sep 01 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.

Last modified February 22 23:03 EST 2019. Contains 320411 sequences. (Running on oeis4.)