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Search: id:A012732
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A012732 cos(arctanh(x)*atan(x)) = 1-12/4!*x^4-9968/8!*x^8-77575872/12!*x^12... +0
1
1, -12, -9968, -77575872, -2494079278848, -227607911866125312, -47454799045677121597440, -19613396255307422099013550080, -14538029942147907114791552602275840 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A013480 A107254 A012532 this_sequence A001322 A159411 A074983

Adjacent sequences: A012729 A012730 A012731 this_sequence A012733 A012734 A012735

KEYWORD

sign

AUTHOR

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

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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