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A017272
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a(n) = (10*n)^4.
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1
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0, 10000, 160000, 810000, 2560000, 6250000, 12960000, 24010000, 40960000, 65610000, 100000000, 146410000, 207360000, 285610000, 384160000, 506250000, 655360000, 835210000, 1049760000, 1303210000
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OFFSET
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0,2
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LINKS
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FORMULA
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G.f.: -10000*x*(1+x)*(x^2 + 10*x + 1)/(x-1)^5. - R. J. Mathar, Mar 20 2018
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MATHEMATICA
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(10*Range[0, 20])^4 (* or *) LinearRecurrence[{5, -10, 10, -5, 1}, {0, 10000, 160000, 810000, 2560000}, 20] (* Harvey P. Dale, Dec 13 2016 *)
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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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