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A012082 tanh(arcsin(tan(x)))=x+1/3!*x^3+1/5!*x^5+1/7!*x^7+7681/9!*x^9... 0
1, 1, 1, 1, 7681, 1689601, 390274561, 113644876801, 42729427952641, 20428848924057601, 12142755781873873921, 8789483754515321088001, 7614001483915573936550401, 7778864404689826961021184001 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

Table of n, a(n) for n=0..13.

CROSSREFS

Sequence in context: A105132 A162141 A133859 * A184026 A307134 A183974

Adjacent sequences:  A012079 A012080 A012081 * A012083 A012084 A012085

KEYWORD

nonn

AUTHOR

Patrick Demichel (patrick.demichel(AT)hp.com)

STATUS

approved

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Last modified October 18 14:52 EDT 2019. Contains 328161 sequences. (Running on oeis4.)