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A012030 arctan(sin(sinh(x)))=x-2/3!*x^3+16/5!*x^5-440/7!*x^7+20224/9!*x^9... 0
1, -2, 16, -440, 20224, -1582976, 178612864, -27969867008, 5765737517056, -1516228355846144, 495092243779256320, -196552136456231321600, 93232152295610535018496, -52074797114273752377786368 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

CROSSREFS

Sequence in context: A027871 A009397 A009700 * A012682 A012678 A012146

Adjacent sequences:  A012027 A012028 A012029 * A012031 A012032 A012033

KEYWORD

sign

AUTHOR

Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)

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Last modified February 16 10:53 EST 2012. Contains 205904 sequences.