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A041477
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Denominators of continued fraction convergents to sqrt(254).
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2
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1, 1, 15, 16, 495, 511, 7649, 8160, 252449, 260609, 3900975, 4161584, 128748495, 132910079, 1989489601, 2122399680, 65661480001, 67783879681, 1014635795535, 1082419675216, 33487226052015, 34569645727231, 517462266233249, 552031911960480, 17078419625047649
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OFFSET
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0,3
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LINKS
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FORMULA
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G.f.: -(x^2-x-1)*(x^4+16*x^2+1) / (x^8-510*x^4+1). - Colin Barker, Nov 18 2013
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MATHEMATICA
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LinearRecurrence[{0, 0, 0, 510, 0, 0, 0, -1}, {1, 1, 15, 16, 495, 511, 7649, 8160}, 30] (* Harvey P. Dale, Mar 03 2024 *)
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PROG
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(Magma) I:=[1, 1, 15, 16, 495, 511, 7649, 8160]; [n le 8 select I[n] else 510*Self(n-4)-Self(n-8): n in [1..40]]; // Vincenzo Librandi, Dec 18 2013
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CROSSREFS
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KEYWORD
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nonn,frac,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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