

A161210


Toothpick sequence starting at the outside corner of an infinite cube from which protudes a half toothpick.


4




OFFSET

0,3


COMMENTS

The sequence gives the number of toothpicks after n rounds. A161211 (the first differences) gives the number added at the nth round.
This structure is a threedimensional version of the toothpick structure of A153006.
Toothpicks are placed following a rotation of axes: x,y,z,x,y,z,... and so on.
See A139250 and A160160 for more information about the toothpick sequences.


LINKS

Table of n, a(n) for n=0..6.
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. A139250, A152980, A153006, A160160, A161211, A161212, A161214, A161216.
Sequence in context: A310275 A310276 A310277 * A256059 A258434 A249341
Adjacent sequences: A161207 A161208 A161209 * A161211 A161212 A161213


KEYWORD

more,nonn


AUTHOR

Omar E. Pol, Jun 06 2009


STATUS

approved



