id:A056952 - OEIS Search Results

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Numerators of continued fraction for alternating factorial.

+0
2

0, 1, 1, 2, 4, 8, 20, 44, 124, 300, 920, 2420, 7940, 22460, 78040, 235260, 859580, 2741660, 10477880, 35152820, 139931620, 491459820, 2030707640, 7436765660, 31805257340, 121046445260, 534514790680, 2108118579060, 9591325648580 (list; graph; listen)

	OFFSET	`0,4`
	FORMULA	`a[0]=0; a[1]=1; a[n]=a[n-1]+[n/2]*a[n-2]`
	CROSSREFS	`Cf. A002793.` `Sequence in context: A105319 A051389 A078006 this_sequence A121703 A115219 A078160` `Adjacent sequences: A056949 A056950 A056951 this_sequence A056953 A056954 A056955`
	KEYWORD	`nonn`
	AUTHOR	`Aleksandar Petojevic (apetoje(AT)ptt.yu), Sep 05 2000`
	EXTENSIONS	`More terms from James A. Sellers (sellersj(AT)math.psu.edu), Sep 07 2000`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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