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A013717
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a(n) = 12^(2*n + 1).
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3
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12, 1728, 248832, 35831808, 5159780352, 743008370688, 106993205379072, 15407021574586368, 2218611106740436992, 319479999370622926848, 46005119909369701466112, 6624737266949237011120128
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OFFSET
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0,1
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LINKS
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FORMULA
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a(n) = 144*a(n-1), a(0)=12.
G.f.: 12/(1-144*x). (End)
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MAPLE
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PROG
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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