login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A135529 Guy Steele's sequence GS(4,5) (see A135416). 11
1, 2, 2, 3, 4, 3, 4, 4, 6, 5, 8, 4, 6, 5, 8, 5, 8, 7, 12, 6, 10, 9, 16, 5, 8, 7, 12, 6, 10, 9, 16, 6, 10, 9, 16, 8, 14, 13, 24, 7, 12, 11, 20, 10, 18, 17, 32, 6, 10, 9, 16, 8, 14, 13, 24, 7, 12, 11, 20, 10, 18, 17, 32, 7, 12, 11, 20, 10, 18, 17, 32, 9, 16, 15, 28, 14, 26, 25, 48, 8, 14, 13, 24 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..1000

FORMULA

a(n) = A135533(n) + 1 - 2^(A000120(n)-1). - Don Knuth, Mar 01 2008

MAPLE

GS(4, 5, 200); # [see A135416].

MATHEMATICA

i = 4; j = 5; Clear[a]; a[1] = 1; a[n_?EvenQ] := a[n] = {0, 1, a[n/2], a[n/2]+1, 2*a[n/2], 2*a[n/2]+1}[[i]]; a[n_?OddQ] := a[n] = {0, 1, a[(n-1)/2], a[(n-1)/2]+1, 2*a[(n-1)/2], 2*a[(n-1)/2]+1}[[j]]; Array[a, 83] (* Jean-Fran├žois Alcover, Sep 12 2013 *)

CROSSREFS

Cf. A135416.

Sequence in context: A127432 A199408 A285325 * A061282 A244040 A328803

Adjacent sequences:  A135526 A135527 A135528 * A135530 A135531 A135532

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, based on a message from Guy Steele and Don Knuth, Mar 01 2008

STATUS

approved

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 August 3 10:49 EDT 2020. Contains 336198 sequences. (Running on oeis4.)