A009289 Expansion of exp(x)/cos(sin(x)).

1, 1, 2, 4, 8, 16, 8, -104, -960, -5504, -22400, -69376, 251008, 5144192, 53882624, 431779328, 2088660992, 3270959104, -173107810304, -2994808352768, -34807275798528, -327470564016128, -1238452597522432, 13424788329791488

Offset

0,3

Links

Table of n, a(n) for n=0..23.

Mathematica

Exp[ x ]/Cos[ Sin[ x ] ]

Crossrefs

Sequence in context: A375635 A119318 A082953 * A070335 A277846 A277845

Adjacent sequences: A009286 A009287 A009288 * A009290 A009291 A009292

Keyword

sign,easy

Author

R. H. Hardin

Extensions

Extended with signs by Olivier Gérard, Mar 15 1997

Status

approved