The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)
A063732 Numbers whose Lucas representation excludes L_0 = 2. 2

%I #23 Oct 02 2022 20:53:10

%S 0,1,3,4,5,7,8,10,11,12,14,15,16,18,19,21,22,23,25,26,28,29,30,32,33,

%T 34,36,37,39,40,41,43,44,45,47,48,50,51,52,54,55,57,58,59,61,62,63,65,

%U 66,68,69,70,72,73,75,76,77,79,80,81,83,84,86,87,88,90

%N Numbers whose Lucas representation excludes L_0 = 2.

%C From _Michel Dekking_, Aug 26 2019: (Start)

%C This sequence is a generalized Beatty sequence. We know that A054770, the sequence of numbers whose Lucas representation includes L_0=2, is equal to A054770(n) = A000201(n) + 2*n - 1 = floor((phi+2)*n) - 1.

%C One also easily checks that the numbers 3-phi and phi+2 form a Beatty pair. This implies that the sequence with terms floor((3-phi)*n)-1 is the complement of A054770 in the natural numbers 0,1,2,...

%C It follows that a(n) = 3*n - floor(n*phi) - 2.

%C (End)

%F a(n) = floor((3-phi)*n)-1, where phi is the golden mean. - _Michel Dekking_, Aug 26 2019

%Y Cf. A003622, A022342. Complement of A054770.

%Y Partial sums of A003842.

%Y Cf. A130310 (Lucas representation).

%K nonn

%O 1,3

%A _Fred Lunnon_, Aug 25 2001

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 16 12:10 EDT 2024. Contains 372552 sequences. (Running on oeis4.)