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A013106 tan(arcsinh(x)+arctan(x))=2*x+13/3!*x^3+305/5!*x^5+15055/7!*x^7... 0
2, 13, 305, 15055, 1273025, 164517175, 30146073425, 7436961751375, 2376178127194625, 954639310366870375, 470988100516584340625, 279956419390270100749375, 197317558974617657009890625 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

CROSSREFS

Sequence in context: A012955 A011808 A011841 * A134485 A075620 A131525

Adjacent sequences:  A013103 A013104 A013105 * A013107 A013108 A013109

KEYWORD

nonn

AUTHOR

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

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Last modified February 16 08:07 EST 2012. Contains 205886 sequences.