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A009659 Expansion of tan(sin(tan(x))). 0
1, 3, 33, 571, 897, -2454829, -541025183, -111302329717, -24150003737343, -5473538199891421, -1184916732110463071, -160650662732139980197, 73044130261960254992001, 109307715032177255302278131 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
MATHEMATICA
With[{nn=30}, Take[CoefficientList[Series[Tan[Sin[Tan[x]]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Jan 02 2018 *)
CROSSREFS
Sequence in context: A092170 A083080 A002916 * A367427 A361212 A144756
KEYWORD
sign
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
Prior Mathematica program replaced by Harvey P. Dale, Jan 02 2018
STATUS
approved

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Last modified April 19 16:52 EDT 2024. Contains 371794 sequences. (Running on oeis4.)