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Search: id:A012191
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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, -1, 9, -393, 25329, -2720433, 438412857, -97949820153, 29044709480289, -11037393803823585, 5229024617702601705, -3021459365652314206953, 2091487425283069032286545, -1708553607407338796161442193 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Sequence in context: A157593 A157602 A124042 this_sequence A012078 A157599 A063876

Adjacent sequences: A012188 A012189 A012190 this_sequence A012192 A012193 A012194

KEYWORD

sign

AUTHOR

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

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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