A012124 arcsin(arcsin(tanh(x)))=x+4/5!*x^5+24/7!*x^7+1744/9!*x^9+61504/11!*x^11...

1, 0, 4, 24, 1744, 61504, 6700992, 632723584, 106726576384, 19137224693760, 4819549055104000, 1376115921056118784, 493566558620424622080, 203121814961910275620864, 99267625002820837091098624

Offset

0,3

Links

Table of n, a(n) for n=0..14.

Crossrefs

Sequence in context: A368141 A368144 A303131 * A108185 A110972 A065711

Adjacent sequences: A012121 A012122 A012123 * A012125 A012126 A012127

Keyword

nonn

Author

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

Status

approved