A022405 - OEIS

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A022405

a(n) = a(n-1)*a(n-2)-a(n-3)

0, 1, 2, 2, 3, 4, 10, 37, 366, 13532, 4952675, 67019597734, 331926286207224918, 22245566178948766568816183137, 7383888166355511098764350563784314022618210032 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	MATHEMATICA	`a[0] = 0; a[1] = 1; a[2] = 2; a[n_] := a[n] = a[n - 1] a[n - 2] - a[n - 3]; Table[a[n], {n, 0, 15}] (* From Alonso del Arte, Jan 31 2011 *)`
	CROSSREFS	`Sequence in context: A153943 A049309 A205118 * A093927 A067088 A065519` `Adjacent sequences: A022402 A022403 A022404 * A022406 A022407 A022408`
	KEYWORD	`easy,nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 05 2000`

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Last modified February 16 08:13 EST 2012. Contains 205893 sequences.