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A017319
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a(n) = (10*n + 4)^3.
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2
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64, 2744, 13824, 39304, 85184, 157464, 262144, 405224, 592704, 830584, 1124864, 1481544, 1906624, 2406104, 2985984, 3652264, 4410944, 5268024, 6229504, 7301384, 8489664, 9800344, 11239424
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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)=64, a(1)=2744, a(2)=13824, a(3)=39304. - Harvey P. Dale, Oct 01 2014
G.f.: 8*(8 + 311*x + 404*x^2 + 27*x^3)/(x-1)^4. - R. J. Mathar, Mar 20 2018
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MATHEMATICA
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(10*Range[0, 30]+4)^3 (* or *) LinearRecurrence[{4, -6, 4, -1}, {64, 2744, 13824, 39304}, 30] (* Harvey P. Dale, Oct 01 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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