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 A194441 Number of toothpicks or D-toothpicks added at n-th stage to the structure of A194440. 17
 0, 1, 2, 4, 4, 4, 4, 8, 8, 4, 4, 8, 12, 16, 8, 16, 16, 4, 4, 8, 12, 16, 16, 24, 26, 24, 12, 20, 28, 40, 20, 32, 32, 4, 4, 8, 12, 16, 16, 24, 26, 24, 20, 32, 40, 64, 40, 48, 54, 40, 12, 20, 32, 48, 48, 64, 70, 76, 30, 44, 64, 88, 44, 64, 64, 4, 4, 8, 12 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS Essentially the first differences of A194440. LINKS N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS FORMULA Conjectures for n = 2^k+j, if -1<=j<=3: a(2^k-1) = 2^k, if k >= 2. a(2^k+0) = 2^k, if k >= 0. a(2^k+1) = 4, if k >= 1. a(2^k+2) = 4, if k >= 1. a(2^k+3) = 8, if k >= 2. End of conjectures. EXAMPLE If written as a triangle: 0, 1, 2, 4,4, 4,4,8,8, 4,4,8,12,16,8,16,16, 4,4,8,12,16,16,24,26,24,12,20,28,40,20,32,32, 4,4,8,12,16,16,24,26,24,20,32,40,64,40,48,54,40,12,20,... . It appears that rows converge to A194696. CROSSREFS Cf. A139251, A160121, A160407, A161831, A194271, A194440, A194443, A194445, A194692, A194693, A194696. Sequence in context: A183226 A235863 A220495 * A220521 A236680 A162798 Adjacent sequences:  A194438 A194439 A194440 * A194442 A194443 A194444 KEYWORD nonn AUTHOR Omar E. Pol, Aug 29 2011 EXTENSIONS More terms from Omar E. Pol, Dec 28 2012 STATUS approved

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Last modified September 17 09:05 EDT 2019. Contains 327128 sequences. (Running on oeis4.)