A012082 tanh(arcsin(tan(x)))=x+1/3!*x^3+1/5!*x^5+1/7!*x^7+7681/9!*x^9...

1, 1, 1, 1, 7681, 1689601, 390274561, 113644876801, 42729427952641, 20428848924057601, 12142755781873873921, 8789483754515321088001, 7614001483915573936550401, 7778864404689826961021184001

Offset

0,5

Links

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

Crossrefs

Sequence in context: A105132 A162141 A133859 * A184026 A035907 A307134

Adjacent sequences: A012079 A012080 A012081 * A012083 A012084 A012085

Keyword

nonn

Author

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

Status

approved