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A033139
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Base 3 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,0.
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5
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1, 3, 9, 28, 84, 252, 757, 2271, 6813, 20440, 61320, 183960, 551881, 1655643, 4966929, 14900788, 44702364, 134107092, 402321277, 1206963831, 3620891493, 10862674480, 32588023440, 97764070320, 293292210961, 879876632883
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OFFSET
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1,2
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LINKS
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FORMULA
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G.f.: 1/((1-3*x)*(1-x^3)). - Paul Barry, May 02 2003
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MATHEMATICA
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CoefficientList[Series[1/((1-3x)(1-x^3)), {x, 0, 1001}], x] (* Vincenzo Librandi, Apr 04 2012 *)
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PROG
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(PARI) x='x+O('x^50); Vec(1/((1-3*x)*(1-x^3))) \\ G. C. Greubel, Sep 26 2017
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CROSSREFS
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KEYWORD
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nonn,base,easy
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AUTHOR
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STATUS
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approved
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