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Search: id:A012873
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A012873 arctan(sech(x)*log(x+1))=x-1/2!*x^2-3/3!*x^3+12/4!*x^4+43/5!*x^5... +0
1
1, -1, -3, 12, 43, -555, -49, 37632, -154867, -3817845, 45540649, 409535148, -12690409929, -14813266559, 3983011043675, -28691304331680, -1331245986549447, 25689766775914647, 419731311262402229 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Adjacent sequences: A012870 A012871 A012872 this_sequence A012874 A012875 A012876

Sequence in context: A065179 A048121 A066987 this_sequence A109437 A005656 A064017

KEYWORD

sign

AUTHOR

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

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

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