id:A059778 - OEIS Search Results

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Expansion of 1 / product((1+q^(2*n+3))/(1-q^(2*n+2)), n=0..inf).

+0
2

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

	OFFSET	`0,1`
	COMMENT	`a(n) = (-1)^n*(t(n)-t(n-1)), n>0, where t(n) = A010054(n) is characteristic function of triangular numbers. - Vladeta Jovovic (vladeta(AT)eunet.rs), Sep 22 2002`
	REFERENCES	`G. E. Andrews, Three-quadrant Ferrers graphs, Indian J. Math., 42 (No. 1, 2000), 1-7.`
	CROSSREFS	`Cf. A059777.` `Sequence in context: A035263 A089045 A070749 this_sequence A104521 A131379 A090971` `Adjacent sequences: A059775 A059776 A059777 this_sequence A059779 A059780 A059781`
	KEYWORD	`sign`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Feb 21 2001`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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