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 A187217 Number of Q-toothpicks added at n-th stage to the structure of A187216. 2
 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 (list; graph; refs; listen; history; text; internal format)
 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

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Last modified May 7 05:10 EDT 2021. Contains 343636 sequences. (Running on oeis4.)