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A169722
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a(n) = (3*2^(n-1)-1)*(18*2^(n-1)-7).
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1
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1, 22, 145, 715, 3151, 13207, 54055, 218695, 879751, 3528967, 14135815, 56583175, 226412551, 905809927, 3623559175, 14494875655, 57980780551, 231925678087, 927707824135, 3710841520135, 14843386527751, 59373587005447, 237494429810695, 949977882820615
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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.: (1+15*x+5*x^2)/(1-7*x+14*x^2-8*x^3). - Bruno Berselli, Dec 04 2012
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MATHEMATICA
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PROG
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(Magma) I:=[1, 22, 145]; [n le 3 select I[n] else 7*Self(n-1)-14*Self(n-2)+8*Self(n-3): n in [1..30]]; // Vincenzo Librandi, Dec 04 2012
(Maxima) makelist(coeff(taylor((1+15*x+5*x^2)/(1-7*x+14*x^2-8*x^3), x, 0, n), x, n), n, 0, 23); /* Bruno Berselli, Dec 04 2012 */
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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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Alice V. Kleeva (alice27353(AT)gmail.com), Jan 19 2010
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STATUS
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approved
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