id:A122033 - OEIS Search Results

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A122033

a(n)=a(n - 1) - (n - 2)*a(n - 2).

+0
1

1, 2, 4, 4, -8, -40, -16, 368, 928, -3296, -21440, 16448, 461696, 561536, -9957632, -34515200, 209783296, 1455022592, -3803020288, -57076808704, 22755112960, 2214428956672, 3518653394944, -85968709390336, -326758168158208, 3301044295639040, 22286480662872064 (list; graph; listen)

	OFFSET	`1,2`
	MATHEMATICA	`a[0] = 1; a[1] = 2; a[n_] := a[n] = a[n - 1] - (n - 2)*a[n - 2] Table[a[n], {n, 0, 30}]`
	CROSSREFS	`Cf. A000898, A121966.` `Sequence in context: A089887 A080007 A006967 this_sequence A096189 A010464 A006579` `Adjacent sequences: A122030 A122031 A122032 this_sequence A122034 A122035 A122036`
	KEYWORD	`sign`
	AUTHOR	`Roger Bagula (rlbagulatftn(AT)yahoo.com), Sep 13 2006`
	EXTENSIONS	`Edited by njas, Sep 17 2006`

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Last modified July 23 17:35 EDT 2008. Contains 142285 sequences.

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