A160018 - OEIS

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A160018

A175099 with a(3) changed from 0 to 1.

0, 0, 0, 1, 1, 0, 0, 2, 3, 0, 0, 2, 2, 0, 0, 4, 7, 0, 0, 2, 2, 0, 0, 4, 6, 0, 0, 4, 4, 0, 0, 8, 15, 0, 0, 2, 2, 0, 0, 4, 6, 0, 0, 4, 4, 0, 0, 8, 14, 0, 0, 4, 4, 0, 0, 8, 12, 0, 0, 8, 8, 0, 0, 16, 31, 0, 0, 2, 2, 0, 0, 4, 6, 0, 0, 4, 4, 0, 0, 8, 14, 0, 0, 4, 4, 0, 0, 8, 12, 0, 0, 8, 8, 0, 0, 16, 30, 0, 0, 4, 4, 0 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,8`
	LINKS	`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`
	FORMULA	`a(n) = a(1) = 0; for k >= 1, a(2^k) = 2^(k-1)-1, a(2^k+i) = 2*a(i) for 1 <= i < 2^k.`
	CROSSREFS	`Cf. A160125, A175098, A175099.` `Sequence in context: A078332 A097109 * A175099 A151867 A170843 A011023` `Adjacent sequences: A160015 A160016 A160017 * A160019 A160020 A160021`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane, Feb 07 2010`

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Last modified February 15 19:15 EST 2012. Contains 205852 sequences.