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A013110 tanh(arcsinh(x)+arctan(x))=2*x-19/3!*x^3+785/5!*x^5-70705/7!*x^7... 1
2, -19, 785, -70705, 11020385, -2631928825, 892329853025, -407413940220625, 240968321541442625, -179211927264110235625, 163684517256281564050625, -180116677926822557970570625, 235018935742557547408645390625 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

CROSSREFS

Sequence in context: A013047 A012951 A012980 * A024228 A015191 A165937

Adjacent sequences:  A013107 A013108 A013109 * A013111 A013112 A013113

KEYWORD

sign

AUTHOR

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

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Last modified February 17 00:09 EST 2012. Contains 205978 sequences.