A183005 Number of toothpicks added at n-th stage to the toothpick structure of A183004.

0, 1, 4, 6, 8, 8, 16, 22, 16, 8, 16, 24, 24, 32, 56, 62, 32, 8, 16, 24, 24, 32, 56, 64, 40, 32, 56, 72, 80, 120, 176, 158, 64, 8, 16, 24, 24, 32, 56, 64, 40, 32, 56, 72, 80, 120, 176

Offset

0,3

Comments

Essentially the first differences of A183004.

Links

Table of n, a(n) for n=0..46.

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

Example

If written as a triangle begins:
  0,
  1,
  4,
  6,8,
  8,16,22,16,
  8,16,24,24,32,56,62,32,
  8,16,24,24,32,56,64,40,32,56,72,80,120,176,158,64,

Crossrefs

Cf. A139250, A139251, A182841, A183004.

Sequence in context: A104173 A023991 A373042 * A103189 A083786 A199976

Adjacent sequences: A183002 A183003 A183004 * A183006 A183007 A183008

Keyword

nonn

Author

Omar E. Pol, Mar 27 2011

Status

approved