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A159787 a(n) = A159786(n+1)*3/4. 7
0, 0, 3, 6, 6, 9, 24, 36, 36, 39, 48, 54, 57, 78, 132, 168, 168, 171, 180, 186, 189, 210, 252, 276, 279, 294, 318, 333, 360, 456, 648, 720, 720, 723, 732, 738, 741, 762, 804, 828, 831, 846, 870, 885, 912, 1008, 1152, 1224, 1227, 1242 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..49.

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

CROSSREFS

Toothpick sequence: A139250.

Cf. A139251, A153003, A159786, A159788, A159789, A159797.

Sequence in context: A135702 A108850 A111652 * A184161 A276000 A316563

Adjacent sequences:  A159784 A159785 A159786 * A159788 A159789 A159790

KEYWORD

nonn

AUTHOR

Omar E. Pol, Apr 28 2009, May 02 2009

EXTENSIONS

a(11)-a(49) from Robert Price, May 10 2019

STATUS

approved

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Last modified October 22 04:25 EDT 2019. Contains 328315 sequences. (Running on oeis4.)