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A085353
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Expansion of (1-5x)/((1-6x)(1-7x)).
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2
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1, 8, 62, 470, 3506, 25838, 188642, 1367150, 9849986, 70629518, 504484322, 3591856430, 25505792066, 180717326798, 1278081981602, 9024938035310, 63644751231746, 448334368529678, 3155267239152482, 22188430630735790
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OFFSET
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0,2
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COMMENTS
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LINKS
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FORMULA
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a(n) = 2*7^n-6^n.
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MAPLE
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MATHEMATICA
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CoefficientList[Series[(1-5x)/((1-6x)(1-7x)), {x, 0, 30}], x] (* Harvey P. Dale, Apr 22 2019 *)
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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