login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A170849 G.f.: Prod_{k >= 2} (1 + 3x^(2^k-1) + 2x^(2^k)). 1
1, 0, 0, 3, 2, 0, 0, 3, 2, 0, 9, 12, 4, 0, 0, 3, 2, 0, 9, 12, 4, 0, 9, 12, 4, 27, 54, 36, 8, 0, 0, 3, 2, 0, 9, 12, 4, 0, 9, 12, 4, 27, 54, 36, 8, 0, 9, 12, 4, 27, 54, 36, 8, 27, 54, 36, 89, 216, 216, 96, 16, 0, 0, 3, 2, 0, 9, 12, 4, 0, 9, 12, 4, 27, 54, 36, 8, 0, 9, 12, 4, 27, 54, 36, 8, 27, 54, 36 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..87.

David Applegate, Omar E. Pol and N. J. A. Sloane, The Toothpick Sequence and Other Sequences from Cellular Automata

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

CROSSREFS

Sequence in context: A133949 A139808 A055654 * A292260 A062787 A131370

Adjacent sequences:  A170846 A170847 A170848 * A170850 A170851 A170852

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jan 02 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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified February 23 17:10 EST 2018. Contains 299584 sequences. (Running on oeis4.)