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Search: id:A091197
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| A091197 |
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Denominators of Taylor series expansion of 3*sin(2*x)/(2*(2+cos(2*x))) (with 0's omitted). |
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+0
2
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| 1, 1, 45, 189, 405, 31185, 1658475, 4209975, 97692469875, 65511420975, 4396161144375, 1613742832877175, 1447106344699640625, 316985199315159375, 790515124238106783140625, 845033408668321044046875, 1693960980510228821015625, 84913182070036240111050234375
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OFFSET
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0,3
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REFERENCES
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G. H. Hardy, A Course of Pure Mathematics, 9-th ed., 1944, p. 291.
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LINKS
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G. H. Hardy, A Course of Pure Mathematics, Cambridge, The University Press, 1908.
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EXAMPLE
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3*sin(2*x)/(2*(2+cos(2*x))) = x-4/45*x^5-8/189*x^7-4/405*x^9+8/31185*x^11+...
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CROSSREFS
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Cf. A091198.
Sequence in context: A061658 A158630 A158634 this_sequence A146302 A087442 A127073
Adjacent sequences: A091194 A091195 A091196 this_sequence A091198 A091199 A091200
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KEYWORD
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nonn,frac
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Feb 23 2004
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