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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

Table of n, a(n) for n=0..54.

David Applegate, Omar E. Pol and N. J. A. Sloane, The Toothpick Sequence and Other Sequences from Cellular Automata

N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS

CROSSREFS

Cf. A139250, A170886, A170889, A170890, A170892.

Sequence in context: A190884 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 February 20 02:47 EST 2018. Contains 299357 sequences. (Running on oeis4.)