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A016228
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Expansion of 1/((1-x)*(1-5*x)(1-6*x)).
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3
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1, 12, 103, 774, 5425, 36456, 238267, 1527258, 9651829, 60352380, 374321311, 2306963022, 14146953913, 86407602384, 526075008835, 3194597025666, 19358317017277, 117103576420068, 707389830102439, 4268180838524790, 25728294320699521, 154965812371951032
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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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MAPLE
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a:=n->sum(6^(n-j)-5^(n-j), j=0..n): seq(a(n), n=1..19); # Zerinvary Lajos, Jan 15 2007
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MATHEMATICA
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Table[(2^(n + 3)*3^(n + 1) - 5^(n + 2) + 1)/20, {n, 40}] (* and *) CoefficientList[Series[1/((1 - z) (1 - 5*z) (1 - 6*z)), {z, 0, 40}], z] (* Vladimir Joseph Stephan Orlovsky, Jul 21 2011 *)
LinearRecurrence[{12, -41, 30}, {1, 12, 103}, 30] (* Harvey P. Dale, Aug 24 2017 *)
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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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