A012161 arcsin(tan(arcsinh(x)))=x+2/3!*x^3+24/5!*x^5+720/7!*x^7+48000/9!*x^9...

1, 2, 24, 720, 48000, 4896000, 804480000, 175037491200, 53010886656000, 19962353688576000, 9637819435745280000, 5576675932580413440000, 3929711821948633743360000, 3235566861687414718464000000

Offset

0,2

Links

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

Crossrefs

Sequence in context: A279309 A010050 A186246 * A009724 A177771 A009396

Adjacent sequences: A012158 A012159 A012160 * A012162 A012163 A012164

Keyword

nonn

Author

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

Status

approved