id:A117907 - OEIS Search Results

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Expansion of (1+x+x^2+x^3+x^4+x^5+x^6)/(1+x+x^2+x^3+x^4+x^5).

+0
2

1, -1, 1, 0, 0, 0, 1, -2, 1, 0, 0, 0, 1, -2, 1, 0, 0, 0, 1, -2, 1, 0, 0, 0, 1, -2, 1, 0, 0, 0, 1, -2, 1, 0, 0, 0, 1, -2, 1, 0, 0, 0, 1, -2, 1, 0, 0, 0, 1, -2, 1, 0, 0, 0, 1, -2, 1, 0, 0, 0, 1, -2, 1 (list; graph; listen)

	OFFSET	`0,8`
	COMMENT	`Diagonal sums of number triangle A117906.`
	FORMULA	`G.f.: x+(1-x)^2/(1-x^6)`
	CROSSREFS	`Sequence in context: A016219 A064662 A024944 this_sequence A103633 A026821 A039964` `Adjacent sequences: A117904 A117905 A117906 this_sequence A117908 A117909 A117910`
	KEYWORD	`easy,sign`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Apr 01 2006`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

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