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A012191 arctanh(atan(sin(x)))=x-1/3!*x^3+9/5!*x^5-393/7!*x^7+25329/9!*x^9... 0
1, -1, 9, -393, 25329, -2720433, 438412857, -97949820153, 29044709480289, -11037393803823585, 5229024617702601705, -3021459365652314206953, 2091487425283069032286545, -1708553607407338796161442193 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

CROSSREFS

Sequence in context: A157593 A157602 A124042 * A012078 A157599 A063876

Adjacent sequences:  A012188 A012189 A012190 * A012192 A012193 A012194

KEYWORD

sign

AUTHOR

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

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Last modified February 17 07:41 EST 2012. Contains 205998 sequences.