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Search: id:A012233
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A012233 arctan(atan(atanh(x)))=x-2/3!*x^3+32/5!*x^5-944/7!*x^7+64640/9!*x^9... +0
1
1, -2, 32, -944, 64640, -5881600, 919673856, -172830523392, 48225099218944, -15466881283850240, 6745794347282989056, -3302151520495305490432, 2072514460288282576027648, -1438958551527596730993344512 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A068110 A009517 A069182 this_sequence A012119 A012198 A012114

Adjacent sequences: A012230 A012231 A012232 this_sequence A012234 A012235 A012236

KEYWORD

sign

AUTHOR

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

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Last modified December 6 22:55 EST 2009. Contains 170429 sequences.

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