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A190954
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a(n) = 10*a(n-1) + 4*a(n-2), with a(0)=0, a(1)=1.
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2
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0, 1, 10, 104, 1080, 11216, 116480, 1209664, 12562560, 130464256, 1354892800, 14070785024, 146127421440, 1517557354496, 15760083230720, 163671061725184, 1699750950174720, 17652193748647936, 183320941287178240, 1903818187866374144, 19771465643812454400
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OFFSET
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0,3
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LINKS
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FORMULA
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MATHEMATICA
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LinearRecurrence[{10, 4}, {0, 1}, 50]
CoefficientList[Series[x/(1-10*x-4*x^2), {x, 0, 50}], x] (* G. C. Greubel, Jan 24 2018 *)
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PROG
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(PARI) x='x+O('x^30); concat([0], Vec(x/(1-10*x-4*x^2))) \\ G. C. Greubel, Jan 24 2018
(Magma) I:=[0, 1]; [n le 2 select I[n] else 10*Self(n-1) + 4*Self(n-2): n in [1..30]]; // G. C. Greubel, Jan 24 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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