OFFSET
0,3
MATHEMATICA
With[{nn=30}, Take[CoefficientList[Series[Sin[x]*Sin[Tanh[x]]/2, {x, 0, nn}], x]Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Sep 24 2012 *)
CROSSREFS
KEYWORD
sign
AUTHOR
EXTENSIONS
Extended with signs Mar 1997
Two more terms (a(14) & a(15)) from Harvey P. Dale, Sep 24 2012
STATUS
approved