A013030 cos(sinh(x)+sin(x))=1-4/2!*x^2+16/4!*x^4-88/6!*x^6+1152/8!*x^8...

1, -4, 16, -88, 1152, -17696, 343424, -10274688, 315332608, -12815815168, 629185325056, -32422278027264, 2168521319694336, -151839257015918592, 12117141068938969088, -1135217173587531628544

Offset

0,2

Links

Table of n, a(n) for n=0..15.

Mathematica

With[{nn=30}, Take[CoefficientList[Series[Cos[Sinh[x]+Sin[x]], {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Mar 01 2015 *)

Crossrefs

Sequence in context: A005495 A052124 A235166 * A124962 A292088 A376797

Adjacent sequences: A013027 A013028 A013029 * A013031 A013032 A013033

Keyword

sign

Author

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

Status

approved