A009284 E.g.f.: exp(x + tan(x)).

1, 2, 4, 10, 32, 128, 616, 3424, 21632, 152000, 1179904, 9986560, 91734656, 906835712, 9609378304, 108540031744, 1302286401536, 16533214773248, 221420625719296, 3119382193635328, 46106240358318080, 713450250644701184, 11531738694322683904, 194362558120600797184

Offset

0,2

Links

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

Prog

(PARI)
x='x+O('x^66);
v=Vec(serlaplace(exp(x + tan(x))))
/* Joerg Arndt_, Sep 01 2012 */

Crossrefs

Sequence in context: A013032 A098830 A121277 * A105557 A166741 A054091

Adjacent sequences: A009281 A009282 A009283 * A009285 A009286 A009287

Keyword

nonn,easy

Author

R. H. Hardin

Extensions

Extended and signs tested Mar 15 1997 by Olivier Gérard

Name corrected by Arkadiusz Wesolowski, Sep 01 2012

Status

approved