A012952 cos(tan(x)+arcsin(x))=1-4/2!*x^2-8/4!*x^4+26/6!*x^6+4008/8!*x^8...

1, -4, -8, 26, 4008, 288486, 23670420, 2395713498, 304636017840, 49472656345230, 10516377983584300, 2991272711709675554, 1135988864475032518984, 557539993775779096522774

Offset

0,2

Links

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

Mathematica

With[{nn=30}, Take[CoefficientList[Series[Cos[Tan[x]+ArcSin[x]], {x, 0, nn}], x] Range[ 0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Mar 23 2023 *)

Crossrefs

Sequence in context: A333894 A218079 A012982 * A272588 A272228 A051243

Adjacent sequences: A012949 A012950 A012951 * A012953 A012954 A012955

Keyword

sign

Author

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

Status

approved