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 A172313 a(n) = A172309(n+1)/2. 6
 1, 1, 1, 2, 2, 1, 2, 3, 3, 4, 3, 6, 5, 3, 2, 3, 5, 6, 5, 7, 7, 8, 8, 9, 7, 8, 6, 10, 11, 4, 4, 8, 9, 8, 5, 8, 10, 12, 13, 18, 12, 16, 15, 20, 14, 12 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 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 CROSSREFS Cf. A139250, A172304, A172305, A172306, A172307, A172308, A172309, A172310, A172311, A172312. Sequence in context: A176816 A053284 A050371 * A022871 A127218 A293520 Adjacent sequences:  A172310 A172311 A172312 * A172314 A172315 A172316 KEYWORD more,nonn AUTHOR Omar E. Pol, Feb 06 2010 EXTENSIONS a(16)-a(46) from Robert Price, Jun 17 2019 STATUS approved

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Last modified July 30 23:12 EDT 2021. Contains 346365 sequences. (Running on oeis4.)