id:A138189 - OEIS Search Results

Search: id:A138189

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Sequence built on pattern (1,-even,-even) beginning 1,-2,-2.

+0
2

1, -2, -2, 1, -4, -4, 1, -6, -6, 1, -8, -8, 1, -10, -10, 1, -12, -12, 1, -14, -14, 1, -16, -16, 1, -18, -18, 1, -20, -20, 1, -22, -22, 1, -24, -24, 1, -26, -26, 1, -28, -28, 1, -30, -30, 1, -32, -32, 1, -34, -34, 1, -36, -36, 1, -38, -38, 1, -40, -40 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Partial sums of A138188.`
	FORMULA	`G.f.: (1-2x-2x^2-x^3)/(1-2x^3+x^6)`
	CROSSREFS	`Adjacent sequences: A138186 A138187 A138188 this_sequence A138190 A138191 A138192` `Sequence in context: A023616 A099491 A129862 this_sequence A110090 A092848 A128111`
	KEYWORD	`easy,sign`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Mar 04 2008`

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Last modified October 11 13:47 EDT 2008. Contains 144830 sequences.

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