A012427 tanh(arctan(x)*sin(x))=2/2!*x^2-12/4!*x^4-50/6!*x^6+12936/8!*x^8...

2, -12, -50, 12936, -885062, 19509820, 8446530118, -2256645131888, 271169972750322, 52894208663673604, -48060787092036123330, 16320006114052519358744, -62047368403218100000854

Offset

0,1

Links

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

Crossrefs

Sequence in context: A241683 A341546 A012423 * A012695 A012382 A198008

Adjacent sequences: A012424 A012425 A012426 * A012428 A012429 A012430

Keyword

sign

Author

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

Status

approved