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A013826
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a(n) = 3^(5*n + 1).
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3
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3, 729, 177147, 43046721, 10460353203, 2541865828329, 617673396283947, 150094635296999121, 36472996377170786403, 8862938119652501095929, 2153693963075557766310747, 523347633027360537213511521
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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) = 243*a(n-1); a(0)=3.
G.f.: 3/(1-243*x). (End)
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MATHEMATICA
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PROG
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(Maxima) makelist(3^(5*n+1), n, 0, 20); /* Martin Ettl, Oct 21 2012 */
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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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