A111914 - OEIS

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A111914

Expansion of -x^2*(x^4-2*x^3+x^2-2*x+1)*(x+1)^2/((x-1)*(x^8-x^4+1)).

0, 0, 1, 1, -1, -3, -4, -4, -5, -7, -9, -9, -8, -8, -9, -9, -7, -5, -4, -4, -3, -1, 1, 1, 0, 0, 1, 1, -1, -3, -4, -4, -5, -7, -9, -9, -8, -8, -9, -9, -7, -5, -4, -4, -3, -1, 1, 1, 0, 0, 1, 1, -1, -3, -4, -4, -5, -7, -9, -9, -8, -8, -9, -9, -7, -5, -4, -4, -3, -1, 1, 1, 0, 0, 1, 1, -1, -3, -4, -4, -5, -7, -9, -9, -8, -8, -9, -9, -7, -5, -4, -4 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,6`
	COMMENTS	`It appears that (a(n)) has period 24.`
	PROG	`4jbasesigcycsumseq[ + .5'i + .5j' + .5'ij' + .5e], sumtype: Y[8] = (int)Y[6] - (int)Y[7] + Y[8] + sum (internal program code); apart from initial term 0.`
	CROSSREFS	`Cf. A111912, A111913, A111915, A085846.` `Sequence in context: A157726 A082223 A098181 * A051665 A028263 A059179` `Adjacent sequences: A111911 A111912 A111913 * A111915 A111916 A111917`
	KEYWORD	`easy,sign`
	AUTHOR	`Creighton Dement (creighton.k.dement(AT)uni-oldenburg.de), Aug 20 2005`

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Last modified February 17 08:44 EST 2012. Contains 205998 sequences.