A127711 - OEIS

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A127711

Inverse of the triangle A(n,k)=if(k<=n,if(n<=2k,1/F(n+1),0),0).

1, 0, 1, 0, -1, 2, 0, 1, -2, 3, 0, 0, 0, -3, 5, 0, -1, 2, 0, -5, 8, 0, 0, 0, 0, 0, -8, 13, 0, 1, -2, 3, 0, 0, -13, 21, 0, 0, 0, 0, 0, 0, 0, -21, 34, 0, 0, 0, -3, 5, 0, 0, 0, -34, 55, 0, 0, 0, 0, 0, 0, 0, 0, 0, -55, 89, 0, -1, 2, 0, -5, 8, 0, 0, 0 (list; table; graph; refs; listen; history; internal format)

	OFFSET	`0,6`
	COMMENTS	`It is conjectured that all elements of this triangle are integers. Row sums are A127712.`
	EXAMPLE	`Triangle begins` `1,` `0, 1,` `0, -1, 2,` `0, 1, -2, 3,` `0, 0, 0, -3, 5,` `0, -1, 2, 0, -5, 8,` `0, 0, 0, 0, 0, -8, 13,` `0, 1, -2, 3, 0, 0, -13, 21,` `0, 0, 0, 0, 0, 0, 0, -21, 34,` `0, 0, 0, -3, 5, 0, 0, 0, -34, 55,` `0, 0, 0, 0, 0, 0, 0, 0, 0, -55, 89,` `0, -1, 2, 0, -5, 8, 0, 0, 0, 0, -89, 144,` `0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -144, 233` `Triangle is the inverse of the triangle` `1,` `0, 1,` `0, 1/2, 1/2,` `0, 0, 1/3, 1/3,` `0, 0, 1/5, 1/5, 1/5,` `0, 0, 0, 1/8, 1/8, 1/8,` `0, 0, 0, 1/13, 1/13, 1/13, 1/13,` `0, 0, 0, 0, 1/21, 1/21, 1/21, 1/21,` `0, 0, 0, 0, 1/34, 1/34, 1/34, 1/34, 1/34`
	CROSSREFS	`Sequence in context: A162986 A128584 A080099 * A069584 A199238 A181347` `Adjacent sequences: A127708 A127709 A127710 * A127712 A127713 A127714`
	KEYWORD	`sign,tabl`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Jan 24 2007`

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Last modified February 15 21:03 EST 2012. Contains 205852 sequences.