id:A078616 - OEIS Search Results

Search: id:A078616

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Sum(k=0..n, A010815(k)).

+0
1

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

	OFFSET	`0,1`
	COMMENT	`To construct the sequence: a(0)=1, a(1)=0, then (21+1) (-1)'s followed by 2 0's, followed by (22+1) 1's, followed by 3 0's, followed by (2*3+1) (-1)'s etc.`
	FORMULA	`For m>0, a(k)=0 if A000326(m)<=k<A000326(m)+m; a(k)=(-1)^m if A000326(m)+m<=k<A000326(m+1)` `G.f.: eta(x)/(1-x) - Benoit Cloitre (benoit7848c(AT)orange.fr), Jan 31 2004`
	PROGRAM	`(PARI) a(n)=polcoeff(eta(x)/(1-x)+O(x^n), n)`
	CROSSREFS	`Sequence in context: A099076 A030308 A120530 this_sequence A104106 A141260 A029883` `Adjacent sequences: A078613 A078614 A078615 this_sequence A078617 A078618 A078619`
	KEYWORD	`sign`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Dec 10 2002`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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