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Search: id:A009445
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| 1, 6, 120, 5040, 362880, 39916800, 6227020800, 1307674368000, 355687428096000, 121645100408832000, 51090942171709440000, 25852016738884976640000, 15511210043330985984000000, 10888869450418352160768000000, 8841761993739701954543616000000, 8222838654177922817725562880000000
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Denominators in the expansion of sin(x): sin(x) = x - x^3/3! + x^5/5! - x^7/7! + ...
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REFERENCES
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W. Dunham, Touring the calculus gallery, Amer. Math. Monthly, 112 (2005), 1-19.
I. Newton, De analysi, 1669; reprinted in D. Whiteside, ed., The Mathematical Works of Isaac Newton, vol. 1, Johnson Reprint Co., 1964; see p. 20.
H. B. Dwight, Tables of Integrals and Other Mathematical Data, Macmillan, NY, 1968, p. 88.
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LINKS
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Eric Weisstein's World of Mathematics, Hyperbolic Sine
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PROGRAM
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sage: [stirling_number1(2*i, 1) for i in xrange(1, 22)] - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 27 2008
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CROSSREFS
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Cf. A010050, A000142.
Sequence in context: A057003 A096718 A096720 this_sequence A094273 A094278 A093910
Adjacent sequences: A009442 A009443 A009444 this_sequence A009446 A009447 A009448
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KEYWORD
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nonn,easy
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AUTHOR
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R. H. Hardin (rhhardin(AT)att.net), Joe Keane (jgk(AT)jgk.org)
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