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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A161413 First differences of A161412. 1
1, 1, 1, 2, 4, 3, 3, 4, 6, 4, 5, 5, 10, 9, 5 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Number of V-toothpicks added to the structure at the n-th round.

LINKS

Table of n, a(n) for n=1..15.

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

CROSSREFS

Cf. A139251, A160121, A160407, A161207, A161329, A161412.

Sequence in context: A137363 A110549 A174574 * A201049 A303354 A227418

Adjacent sequences:  A161410 A161411 A161412 * A161414 A161415 A161416

KEYWORD

more,nonn

AUTHOR

Omar E. Pol, Jun 10 2009

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 October 21 10:29 EDT 2018. Contains 316414 sequences. (Running on oeis4.)