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 A170888 Similar to A160406, but always staying outside the wedge, starting at stage 0 with a vertical half-toothpick which protrudes from the vertex of the wedge. 4
 0, 1, 3, 7, 11, 15, 21, 31, 39, 43, 49, 59, 69, 81, 101, 127, 143, 147, 153, 163, 173, 185, 205, 231, 249, 261, 281, 309, 339, 381, 445, 511, 543, 547, 553, 563, 573, 585, 605, 631, 649, 661, 681, 709, 739, 781, 845, 911, 945, 957, 977, 1005, 1035, 1077, 1141 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS See A170889 for the first differences. 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, A170886, A170889, A170890, A170892. Sequence in context: A310213 A109507 A160802 * A182838 A163094 A022800 Adjacent sequences:  A170885 A170886 A170887 * A170889 A170890 A170891 KEYWORD nonn AUTHOR Omar E. Pol, Jan 09 2010 EXTENSIONS Terms beyond a(10) from R. J. Mathar, Jan 25 2010 STATUS approved

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Last modified September 21 01:47 EDT 2019. Contains 327252 sequences. (Running on oeis4.)