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Search: id:A013173
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A013173 arctan(atanh(x)+tan(x))=2*x-12/3!*x^3+488/5!*x^5-48608/7!*x^7... +0
1
2, -12, 488, -48608, 9080960, -2722798848, 1197871592448, -726520846829568, 581088281306562560, -592572418222512668672, 750419972539476482195456, -1155381150026866713259671552, 2125413346746653166067846742016 (list; graph; listen)
OFFSET

0,1
CROSSREFS

Sequence in context: A091471 A012625 A012630 this_sequence A013147 A050643 A145513

Adjacent sequences: A013170 A013171 A013172 this_sequence A013174 A013175 A013176

KEYWORD

sign

AUTHOR

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

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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