A085144 - OEIS

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A085144

a(0)=0, a(2n) = a(n)+1, a(2n+1) = -a(n).

0, 0, 1, 0, 2, -1, 1, 0, 3, -2, 0, 1, 2, -1, 1, 0, 4, -3, -1, 2, 1, 0, 2, -1, 3, -2, 0, 1, 2, -1, 1, 0, 5, -4, -2, 3, 0, 1, 3, -2, 2, -1, 1, 0, 3, -2, 0, 1, 4, -3, -1, 2, 1, 0, 2, -1, 3, -2, 0, 1, 2, -1, 1, 0, 6, -5, -3, 4, -1, 2, 4, -3, 1, 0, 2, -1, 4, -3, -1, 2, 3, -2, 0, 1, 2 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,5`
	COMMENTS	`Local maxima are a(2^k) = k, minima are a(2^k+1) = -k+1.`
	CROSSREFS	`Zeros are in A085145. Cf. A004718, A010060, A059448.` `Sequence in context: A116405 A029352 A055168 * A156578 A171846 A097230` `Adjacent sequences: A085141 A085142 A085143 * A085145 A085146 A085147`
	KEYWORD	`sign,easy`
	AUTHOR	`Ralf Stephan (ralf(AT)ark.in-berlin.de), Jun 20 2003`

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Last modified February 17 21:13 EST 2012. Contains 206085 sequences.