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A009407 Expansion of log(1+x)*cos(sinh(x)). 0
0, 1, -1, -1, 0, -11, 15, 27, -504, 7785, -74025, 835735, -9654216, 121643677, -1646734089, 23833558707, -368032192080, 6033531089873, -104751319907313, 1920112851095471, -37066806679606640, 751794216181100869 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,6

LINKS

Table of n, a(n) for n=0..21.

FORMULA

a(n) ~ (n-1)! * (-1)^(n+1) * cos(sinh(1)). - Vaclav Kotesovec, Jan 24 2015

MATHEMATICA

Log[ 1+x ]*Cos[ Sinh[ x ] ]

CoefficientList[Series[Cos[Sinh[x]]*Log[1 + x], {x, 0, 20}], x] * Range[0, 20]! (* Vaclav Kotesovec, Jan 24 2015 *)

CROSSREFS

Sequence in context: A054280 A214863 A094766 * A009433 A275242 A030099

Adjacent sequences:  A009404 A009405 A009406 * A009408 A009409 A009410

KEYWORD

sign,easy

AUTHOR

R. H. Hardin

EXTENSIONS

Extended with signs by Olivier Gérard, Mar 15 1997

STATUS

approved

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Last modified May 23 12:38 EDT 2019. Contains 323514 sequences. (Running on oeis4.)