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A013782
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a(n) = 5^(4*n + 1).
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2
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5, 3125, 1953125, 1220703125, 762939453125, 476837158203125, 298023223876953125, 186264514923095703125, 116415321826934814453125, 72759576141834259033203125, 45474735088646411895751953125
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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) = 625*a(n-1); a(0)=5.
G.f.: 5/(1-625*x). (End)
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MATHEMATICA
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5^(4*Range[0, 10]+1) (* or *) NestList[625#&, 5, 10] (* Harvey P. Dale, Jul 12 2012 *)
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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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