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A009690
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Expansion of tan(tan(sin(x))).
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0
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1, 3, 33, 739, 26913, 1416995, 101493889, 9507242819, 1129063338945, 165774337045955, 29468302949572705, 6227421783562843427, 1539946012373786340321, 439696998663601508079587
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OFFSET
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0,2
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LINKS
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MATHEMATICA
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With[{nn=30}, Take[CoefficientList[Series[Tan[Tan[Sin[x]]], {x, 0, nn}], x] Range[ 0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Jun 01 2021 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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