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A017379
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a(n) = (10*n + 9)^3.
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2
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729, 6859, 24389, 59319, 117649, 205379, 328509, 493039, 704969, 970299, 1295029, 1685159, 2146689, 2685619, 3307949, 4019679, 4826809, 5735339, 6751269, 7880599, 9129329, 10503459, 12008989
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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) = 4*a(n-1) - 6*a(n-2) + 4*a(n-3) - a(n-4); a(0)=729, a(1)=6859, a(2)=24389, a(3)=59319. - Harvey P. Dale, Nov 01 2011
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MATHEMATICA
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(10Range[0, 30]+9)^3 (* or *) LinearRecurrence[{4, -6, 4, -1}, {729, 6859, 24389, 59319}, 30] (* Harvey P. Dale, Nov 01 2011 *)
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PROG
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(PARI) vector(40, n, n--; (10*n + 9)^3) \\ G. C. Greubel, Nov 10 2018
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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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