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!)
A169688 A169648(4n+4) - A147582(4n+5). 3
0, 4, 24, 16, 96, 16, 80, 48, 336, 16, 80, 48, 304, 48, 240, 144, 1104, 16, 80, 48, 304, 48, 240, 144, 1040, 48, 240, 144, 912, 144, 720, 432, 3504, 16, 80, 48, 304, 48, 240, 144, 1040, 48, 240, 144, 912, 144, 720, 432, 3376, 48, 240, 144, 912, 144, 720, 432, 3120, 144, 720 (list; graph; refs; listen; history; text; internal format)
OFFSET

-1,2

COMMENTS

A169648 and A147582 agree except at these terms.

LINKS

Table of n, a(n) for n=-1..57.

David Applegate, Omar E. Pol and N. J. A. Sloane, The Toothpick Sequence and Other Sequences from Cellular Automata, Congressus Numerantium, Vol. 206 (2010), 157-191. [There is a typo in Theorem 6: (13) should read u(n) = 4.3^(wt(n-1)-1) for n >= 2.]

N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS

FORMULA

For recurrence see A169689.

CROSSREFS

Cf. A147582, A169648, A169689.

Sequence in context: A010294 A216923 A233149 * A222595 A103225 A303333

Adjacent sequences:  A169685 A169686 A169687 * A169689 A169690 A169691

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Apr 14 2010

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 June 18 11:56 EDT 2021. Contains 345098 sequences. (Running on oeis4.)