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 A182841 Number of toothpicks added at n-th stage in the toothpick structure of A182840. 9
 0, 1, 4, 8, 14, 16, 14, 24, 38, 32, 14, 24, 46, 64, 54, 56, 86, 64, 14, 24, 46, 64, 62, 80, 126, 144, 86, 56, 110, 168, 158, 144, 198, 128, 14, 24, 46, 64, 62, 80, 126, 144, 94, 80, 142, 224, 238, 224, 286, 304, 150, 56, 110, 168, 182, 216, 326, 408, 302, 176, 262, 408, 414, 360, 438, 256 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS First differences of A182840. LINKS Olaf Voß, Table of n, a(n) for n = 0..1000 David Applegate, The movie version 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 Olaf Voß, Toothpick structures on hexagonal net FORMULA a(2^k + 1) = 2^(k+2), at least for 0 <= k <= 9. - Omar E. Pol, Nov 01 2014 EXAMPLE From Omar E. Pol, Nov 01 2014: (Start) When written as an irregular triangle: 0; 1; 4; 8; 14, 16; 14, 24, 38, 32; 14, 24, 46, 64, 54, 56, 86, 64; 14, 24, 46, 64, 62, 80, 126, 144, 86, 56, 110, 168, 158, 144, 198, 128; 14, 24, 46, 64, 62, 80, 126, 144, 94, 80, 142, 224, 238, 224, 286, 304, 150, 56, 110, 168, 182, 216, 326, 408, 302, 176, 262, 408, 414, 360, 438, 256; ... (End) CROSSREFS Cf. A139250, A139251, A160121, A161207, A182633, A182635, A151724, A182842. Sequence in context: A166054 A291043 A312244 * A312245 A312246 A312247 Adjacent sequences:  A182838 A182839 A182840 * A182842 A182843 A182844 KEYWORD nonn,tabf AUTHOR Omar E. Pol, Dec 09 2010 EXTENSIONS More terms from Olaf Voß, Dec 24 2010 Wiki link added by Olaf Voß, Jan 14 2011 STATUS approved

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Last modified September 20 17:42 EDT 2021. Contains 347588 sequences. (Running on oeis4.)