A187217 Number of Q-toothpicks added at n-th stage to the structure of A187216.

0, 2, 6, 8, 14, 22, 30, 22, 38, 54, 70, 22, 38, 54, 70, 54, 102, 150, 134, 22, 38, 54, 70, 54, 102, 150, 134, 54, 102, 150, 166, 182, 326, 406, 262, 22, 38, 54, 70, 54, 102, 150, 134, 54, 102, 150, 166, 182, 326, 406, 262, 54, 102, 150, 166, 182, 326, 406, 294, 182, 326

Offset

0,2

Comments

Essentially the first differences of A187216.

Links

Nathaniel Johnston, Table of n, a(n) for n = 0..200

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.]

Nathaniel Johnston, The Q-Toothpick Cellular Automaton

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

Crossrefs

Cf. A139250, A139251, A187216, A187211, A187213, A187221.

Sequence in context: A137831 A117588 A174229 * A022112 A107019 A269831

Adjacent sequences: A187214 A187215 A187216 * A187218 A187219 A187220

Keyword

nonn

Author

Omar E. Pol, Mar 30 2011

Extensions

a(15) - a(60) from Nathaniel Johnston, Apr 15 2011

Status

approved