A012629 tanh(arcsinh(x)*arctan(x))=2/2!*x^2-12/4!*x^4-2/6!*x^6+10248/8!*x^8...

2, -12, -2, 10248, -914598, 58990140, 390971670, -1399074591600, 414051949573170, -75189740418805500, -1988456671385842770, 10786170755283590925720, -6649588570098570005749110

Offset

0,1

Links

Table of n, a(n) for n=0..12.

Crossrefs

Sequence in context: A185633 A246737 A012626 * A371589 A082827 A290100

Adjacent sequences: A012626 A012627 A012628 * A012630 A012631 A012632

Keyword

sign

Author

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

Status

approved