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A009703
Expansion of tan(tan(x)*cosh(x)).
0
1, 7, 157, 8979, 886713, 134445023, 29022793685, 8445323514091, 3184918775268209, 1510646771277811895, 880054493816590384397, 617711163636251375413699, 514133191574202261159610153
OFFSET
0,2
MATHEMATICA
With[{nn=30}, Take[CoefficientList[Series[Tan[Tan[x]*Cosh[x]], {x, 0, nn}], x] Range[ 0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Jun 06 2021 *)
CROSSREFS
Sequence in context: A073605 A115866 A197766 * A014385 A114485 A061010
KEYWORD
nonn
AUTHOR
EXTENSIONS
Extended and signs tested Mar 15 1997 by Olivier Gérard.
Previous Mathematica program replaced by Harvey P. Dale, Jun 06 2021
STATUS
approved