id:A123703 - OEIS Search Results

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a(1)=a(2)=1. For n >= 3, a(n) = |(product{k=1 to n-1} a(k)) - (sum{j=1 to n-1} a(j))|.

+0
2

1, 1, 1, 2, 3, 2, 2, 12, 264, 75744, 5758891776, 33165272341980979200, 1099935289708766240667530888404210286592, 1209857641546707521062997518664689369471121315619387834957574646785625397657600 (list; graph; listen)

	OFFSET	`1,4`
	MATHEMATICA	`f[l_List] := Append[l, Abs[Times @@ l - Plus @@ l]]; Nest[f, {1, 1}, 12] (Chandler)`
	CROSSREFS	`Cf. A123702.` `Sequence in context: A007653 A134142 A138680 this_sequence A105436 A059905 A014836` `Adjacent sequences: A123700 A123701 A123702 this_sequence A123704 A123705 A123706`
	KEYWORD	`easy,nonn`
	AUTHOR	`Leroy Quet (qq-quet(AT)mindspring.com), Oct 08 2006`
	EXTENSIONS	`Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Oct 09 2006`

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

AT&T Labs Research