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A138590
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a(n) = Fibonacci(9*n).
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2
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0, 34, 2584, 196418, 14930352, 1134903170, 86267571272, 6557470319842, 498454011879264, 37889062373143906, 2880067194370816120, 218922995834555169026, 16641027750620563662096, 1264937032042997393488322, 96151855463018422468774568
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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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a(n) = ((-38 - 17*sqrt(5))^(-n)*(-1 + (-2889 - 1292*sqrt(5))^n)) / sqrt(5).
a(n) = 76*a(n-1) + a(n-2) for n > 1.
(End)
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MATHEMATICA
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PROG
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(MuPAD) numlib::fibonacci(9*n) $ n = 0..25;
(PARI) concat(0, Vec(34*x / (1 - 76*x - x^2) + O(x^30))) \\ Colin Barker, Apr 06 2017
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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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