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A013757
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a(n) = 15^(3*n + 2).
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1
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225, 759375, 2562890625, 8649755859375, 29192926025390625, 98526125335693359375, 332525673007965087890625, 1122274146401882171630859375, 3787675244106352329254150390625, 12783403948858939111232757568359375
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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) = 3375*a(n-1); a(0)=225.
G.f.: 225/(1-3375*x). (End)
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MATHEMATICA
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15^(3Range[0, 20]+2) (* or *) NestList[3375#&, 225, 20] (* Harvey P. Dale, Oct 25 2011 *)
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PROG
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(Maxima) makelist(15^(3*n+2), 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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