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A009800
Expansion of tanh(sin(x)*x).
1
0, 2, -4, -234, 6712, 352810, -51057612, -1023950914, 1108394851184, -71310362507694, -51164568485366420, 13196238860000066662, 3757445119118639509416, -2956206137979802134429574
OFFSET
0,2
MATHEMATICA
Tanh[ Sin[ x ]*x ] (* Even Part *)
CROSSREFS
Cf. A024243.
Sequence in context: A012556 A329418 A018729 * A018742 A255891 A018747
KEYWORD
sign
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
STATUS
approved