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 A160416 Number of "ON" cells at n-th stage in simple 2-dimensional cellular automaton (see Comments for precise definition). 3
 0, 1, 8, 11, 32, 39, 80, 89, 146, 159 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS 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 we label the generations of cells turned ON by consecutive numbers we get the cell pattern shown below: ..9...9...9...9...9 ...888.888.888.888. ...878.878.878.878. ...886668666866688. ..9..656.656.656..9 ...886644464446688. ...878.434.434.878. ...886644222446688. ..9..656.212.656..9 000000000022446688. 0000000000.434.878. 000000000064446688. 000000000056.656..9 000000000066866688. 0000000000.878.878. 0000000000.888.888. 00000000009...9...9 0000000000......... 0000000000......... CROSSREFS Cf. A139250, A139251, A152980, A153006, A160117, A160118, A160410, A160412, A160414. Cf. A160796, A161417. [From Omar E. Pol, Jun 14 2009] Sequence in context: A051791 A243975 A160796 * A056873 A303883 A304889 Adjacent sequences:  A160413 A160414 A160415 * A160417 A160418 A160419 KEYWORD nonn AUTHOR Omar E. Pol, May 20 2009, Jun 14 2009 STATUS approved

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Last modified August 3 08:21 EDT 2021. Contains 346435 sequences. (Running on oeis4.)