id:A105811 - OEIS Search Results

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Expansion of (1+x-x^2)/(1+x)^2.

+0
5

1, -1, 0, 1, -2, 3, -4, 5, -6, 7, -8, 9, -10, 11, -12, 13, -14, 15, -16, 17, -18, 19, -20, 21, -22, 23, -24, 25, -26, 27, -28, 29, -30, 31, -32, 33, -34, 35, -36, 37, -38, 39, -40, 41, -42, 43, -44, 45, -46, 47, -48, 49, -50, 51, -52, 53, -54, 55, -56, 57, -58, 59, -60, 61, -62, 63, -64, 65 (list; graph; listen)

	OFFSET	`0,5`
	COMMENT	`First column of number triangle A105810.`
	FORMULA	`a(n)=-0^n-(-1)^n*(n-2)`
	CROSSREFS	`Sequence in context: A097141 A160356 A038608 this_sequence A069782 A088480 A061019` `Adjacent sequences: A105808 A105809 A105810 this_sequence A105812 A105813 A105814`
	KEYWORD	`easy,sign`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), May 04 2005`

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Last modified December 6 22:55 EST 2009. Contains 170429 sequences.

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