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A012385
sec(tan(x)*arcsin(x))=1+12/4!*x^4+360/6!*x^6+24080/8!*x^8...
0
1, 0, 12, 360, 24080, 2520000, 388466496, 82494828416, 23101056559360, 8247662229497856, 3656849221865495552, 1971359917831265798144, 1269841106398055675924480, 963238435991748310206791680
OFFSET
0,3
MATHEMATICA
With[{nn=30}, Take[CoefficientList[Series[Sec[Tan[x]ArcSin[x]], {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Apr 21 2024 *)
CROSSREFS
Sequence in context: A279182 A002674 A012552 * A012430 A012632 A081791
KEYWORD
nonn
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved