A151887 Number of toothpicks turned OFF at generation n in A151885.
0, 0, 0, 2, 0, 10, 0, 10, 0, 38, 0, 10, 0, 50, 0, 34, 0, 138, 0, 10, 0, 50, 0, 50, 0, 190, 0, 34, 0, 170, 0, 122, 0, 494, 0, 10, 0, 50, 0, 50, 0, 190, 0, 50, 0, 250, 0, 170, 0, 690, 0, 34, 0, 170, 0, 170, 0, 646, 0, 122, 0, 610, 0, 434, 0, 1762
Offset: 0
Keywords
Links
- Nathaniel Johnston, Table of n, a(n) for n = 0..926
- 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
- N. J. A. Sloane, Illustration of first 8 generations
Formula
a(2n) = 0 for all n >= 0.
Extensions
Terms after a(8) from Nathaniel Johnston, Apr 02 2011