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A009412
Expansion of log(1+x)*cosh(sin(x)).
0
0, 1, -1, 5, -12, 29, -165, 993, -7056, 58617, -520065, 5139485, -56499564, 676947413, -8785333557, 122824831353, -1839706861440, 29397288124913, -499197383688033, 8976479629200565, -170396114982640300, 3405066284386654349
OFFSET
0,4
FORMULA
a(n) ~ (n-1)! * (-1)^(n+1) * cosh(sin(1)). - Vaclav Kotesovec, Jan 23 2015
MATHEMATICA
Log[ 1+x ]*Cosh[ Sin[ x ] ]
CoefficientList[Series[Cosh[Sin[x]]*Log[1 + x], {x, 0, 20}], x] * Range[0, 20]! (* Vaclav Kotesovec, Jan 23 2015 *)
CROSSREFS
Sequence in context: A266471 A069306 A277088 * A009428 A220029 A192520
KEYWORD
sign,easy
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
STATUS
approved