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 A170889 First differences of toothpick sequence A170888. 4
 0, 1, 2, 4, 4, 4, 6, 10, 8, 4, 6, 10, 10, 12, 20, 26, 16, 4, 6, 10, 10, 12, 20, 26, 18, 12, 20, 28, 30, 42, 64, 66, 32, 4, 6, 10, 10, 12, 20, 26, 18, 12, 20, 28, 30, 42, 64, 66, 34, 12, 20, 28, 30, 42, 64, 68, 46, 42, 66, 84, 100, 146, 192, 162, 64, 4, 6, 10, 10, 12, 20, 26, 18, 12 (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 From Omar E. Pol, Jan 30 2013 (Start): Written as an irregular triangle: 0; 1; 2; 4,4; 4,6,10,8; 4,6,10,10,12,20,26,16; 4,6,10,10,12,20,26,18,12,20,28,30,42,64,66,32; 4,6,10,10,12,20,26,18,12,20,28,30,42,64,66,34,12,20,28,30,42,64,68,46,42,66,84,100,146,192,162,64; (End) CROSSREFS Cf. A139250, A139251, A160407, A170887, A170888, A170891, A170893. Sequence in context: A201629 A033827 A008217 * A182839 A043552 A325940 Adjacent sequences:  A170886 A170887 A170888 * A170890 A170891 A170892 KEYWORD nonn,tabf 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 October 23 06:57 EDT 2019. Contains 328335 sequences. (Running on oeis4.)