A012106 tanh(arcsin(sinh(x)))=x-4/5!*x^5+80/7!*x^7+5456/9!*x^9+511360/11!*x^11...

1, 0, -4, 80, 5456, 511360, 83316416, 18755459840, 5535063173376, 2088819464171520, 981883326234254336, 562564553455472742400, 385997167840660261687296, 312523332440480815021588480

Offset

0,3

Links

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

Crossrefs

Sequence in context: A013180 A322751 A000316 * A156103 A204294 A203480

Adjacent sequences: A012103 A012104 A012105 * A012107 A012108 A012109

Keyword

sign

Author

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

Status

approved