A012764 arcsin(cosh(x)*sin(x))=x+3/3!*x^3+25/5!*x^5+1043/7!*x^7+72465/9!*x^9...

1, 3, 25, 1043, 72465, 8621283, 1524721705, 377210665523, 124306024835745, 52632893869133763, 27845178915137542585, 17999274225229924466003, 13958549668775664990210225, 12790824660557018843352942243

Offset

0,2

Links

Table of n, a(n) for n=0..13.

Mathematica

With[{nn=30}, Take[CoefficientList[Series[ArcSin[Cosh[x]Sin[x]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Dec 14 2019 *)

Crossrefs

Sequence in context: A322063 A350902 A306792 * A219275 A101733 A309116

Adjacent sequences: A012761 A012762 A012763 * A012765 A012766 A012767

Keyword

nonn

Author

Patrick Demichel (patrick.demichel(AT)hp.com)

Status

approved