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A173093
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a(1)=1, a(2)=3, a(n)=a(n-2)*a(n-1)-a(n-2).
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6
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1, 3, 2, 3, 4, 9, 32, 279, 8896, 2481705, 22077238784, 54789193873965015, 1209594115938395614939902976, 66272686526956073137307690185435702644419625
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OFFSET
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1,2
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LINKS
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MATHEMATICA
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a=1; b=3; lst={a, b}; Do[c=a*b-a; AppendTo[lst, c]; a=b; b=c, {n, 14}]; lst
RecurrenceTable[{a[1]==1, a[2]==3, a[n]==a[n-2]a[n-1]-a[n-2]}, a, {n, 20}] (* Harvey P. Dale, Feb 09 2014 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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