id:A089045 - OEIS Search Results

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a(1)=1 and a(n)=a(n-1)+(-1)^floor(n/2)*a(floor(n/2)).

+0
1

1, 0, -1, -1, -1, 0, 1, 0, -1, 0, 1, 1, 1, 0, -1, -1, -1, 0, 1, 1, 1, 0, -1, 0, 1, 0, -1, -1, -1, 0, 1, 0, -1, 0, 1, 1, 1, 0, -1, 0, 1, 0, -1, -1, -1, 0, 1, 1, 1, 0, -1, -1, -1, 0, 1, 0, -1, 0, 1, 1, 1, 0, -1, -1, -1, 0, 1, 1, 1, 0, -1, 0, 1, 0, -1, -1, -1, 0, 1, 1, 1, 0, -1, -1, -1, 0, 1, 0, -1, 0, 1, 1, 1, 0, -1, 0, 1, 0, -1, -1, -1, 0, 1, 0, -1, 0, 1, 1, 1, 0 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`abs(a(n))=A035263(n)`
	CROSSREFS	`Cf. A001511, A035263.` `Sequence in context: A141260 A029883 A035263 this_sequence A070749 A059778 A104521` `Adjacent sequences: A089042 A089043 A089044 this_sequence A089046 A089047 A089048`
	KEYWORD	`sign`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Dec 02 2003`

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

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