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A016887
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a(n) = (5*n+3)^3.
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1
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27, 512, 2197, 5832, 12167, 21952, 35937, 54872, 79507, 110592, 148877, 195112, 250047, 314432, 389017, 474552, 571787, 681472, 804357, 941192, 1092727, 1259712, 1442897, 1643032, 1860867, 2097152, 2352637, 2628072, 2924207, 3241792, 3581577, 3944312
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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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O.g.f.: (27 + 404*x + 311*x^2 + 8*x^3)/(1 - x)^4.
E.g.f.: (27 + 485*x + 600*x^2 + 125*x^3)*exp(x). (End)
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MATHEMATICA
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(5 Range[0, 30] + 3)^3 (* or *) LinearRecurrence[{4, -6, 4, -1}, {27, 512, 2197, 5832}, 30] (* Harvey P. Dale, Nov 26 2014 *)
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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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