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

Author

Omar E. Pol, Mar 30 2011

Keywords

• nonn

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.

Extensions

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