id:A122958 - OEIS Search Results

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a(0)=1, a(n)=2-2^(n-1) for n>0.

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1, 1, 0, -2, -6, -14, -30, -62, -126, -254, -510, -1022, -2046, -4094, -8190, -16382, -32766, -65534, -131070, -262142, -524286, -1048574, -2097170, -4194302, -8388606, -16777214, -33554430, -67108862, -134217726, -268435454 (list; graph; listen)

	OFFSET	`0,4`
	FORMULA	`a(0)=1, a(1)=1, a(2)=0, a(n)=3a(n-1)-2a(n-2) for n>2 . G.f. : (1-2x-x^2)/(1-3x+2*x^2) . a(n)=-A000918(n-1) for n>0.`
	CROSSREFS	`Apart from signs, same as A000918.` `Sequence in context: A072611 A000918 A095121 this_sequence A122959 A059076 A002524` `Adjacent sequences: A122955 A122956 A122957 this_sequence A122959 A122960 A122961`
	KEYWORD	`sign`
	AUTHOR	`Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Oct 26 2006`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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