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A091198 Numerators of Taylor series expansion of 3*sin(2*x)/(2*(2+cos(2*x))) (with 0's omitted). 1
1, 0, -4, -8, -4, 8, 2152, 2512, 13111268, -395176, -82924456, -13555899088, -2631923234888, 37752874672, 216345498683758064, 99819297900260128, 41627318132855276, -183304161420546414632, -9525824788653159417913288, -9237738179906235615568, -362496161669176865866257860344 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

REFERENCES

G. H. Hardy, A Course of Pure Mathematics, 9th ed., 1944, p. 291.

LINKS

Table of n, a(n) for n=0..20.

G. H. Hardy, A Course of Pure Mathematics, Cambridge, The University Press, 1908.

EXAMPLE

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+...

MATHEMATICA

Numerator[Take[CoefficientList[Series[(3Sin[2x])/(2(2+Cos[2x])), {x, 0, 50}], x], {2, -1, 2}]] (* Harvey P. Dale, Apr 09 2012 *)

CROSSREFS

Cf. A091197.

Sequence in context: A336818 A205681 A059163 * A200641 A245780 A165267

Adjacent sequences:  A091195 A091196 A091197 * A091199 A091200 A091201

KEYWORD

sign,frac

AUTHOR

N. J. A. Sloane, Feb 23 2004

STATUS

approved

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Last modified September 21 05:55 EDT 2020. Contains 337267 sequences. (Running on oeis4.)