A009280 Expansion of exp(x)*cos(log(1+x)).

1, 1, 0, 1, -3, 11, -54, 295, -1859, 13057, -100804, 840841, -7439935, 68148731, -620549058, 5116464431, -25440998439, -377177742815, 19125593995896, -562210227462223, 14622324046506341, -367386349871225269

Offset

0,5

Links

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

Mathematica

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

Crossrefs

Sequence in context: A057325 A302760 A054700 * A394878 A393228 A267832

Adjacent sequences: A009277 A009278 A009279 * A009281 A009282 A009283

Keyword

sign,easy

Author

R. H. Hardin

Extensions

Extended with signs by Olivier Gérard, Mar 15 1997

Status

approved