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A012427
tanh(arctan(x)*sin(x))=2/2!*x^2-12/4!*x^4-50/6!*x^6+12936/8!*x^8...
0
2, -12, -50, 12936, -885062, 19509820, 8446530118, -2256645131888, 271169972750322, 52894208663673604, -48060787092036123330, 16320006114052519358744, -62047368403218100000854
OFFSET
0,1
CROSSREFS
Sequence in context: A241683 A341546 A012423 * A012695 A012382 A198008
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved