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A047689
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Numerators of coefficients in Taylor series for exp(cos(x)-1).
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2
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1, -1, 1, -31, 379, -1639, 150349, -4373461, 39074491, -6698486371, 30708135509, -4934550701809, 1319703681935929, -99896787342523081, 2121075416425574701, -72929243565543262421, 83877585692383961052499, -2410048463569672917849859
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OFFSET
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0,4
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REFERENCES
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CRC Standard Mathematical Tables and Formulae, 30th ed. 1996, p. 42.
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LINKS
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EXAMPLE
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1 - (1/2)*x^2 + (1/6)*x^4 - (31/720)*x^6 + (379/40320)*x^8 - (1639/907200)*x^10 + ...
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CROSSREFS
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KEYWORD
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sign,easy,frac
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AUTHOR
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STATUS
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approved
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