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A009285
E.g.f.: exp(x + tanh(x)).
0
1, 2, 4, 6, 0, -32, -24, 640, 2176, -16832, -138496, 521216, 10367616, -8750336, -942458368, -2101041920, 102567493632, 621205094400, -12985904205824, -148249466093568, 1832574587011072, 36650477053591552, -266274589196877824, -9888178289857134592, 31088700594998902784
OFFSET
0,2
MATHEMATICA
With[{nn=30}, CoefficientList[Series[Exp[x+Tanh[x]], {x, 0, nn}], x] Range[ 0, nn]!] (* Harvey P. Dale, Aug 09 2020 *)
PROG
(PARI)
x='x+O('x^66);
Vec(serlaplace(exp(x + tanh(x))))
/* Joerg Arndt_, Sep 01 2012 */
CROSSREFS
Sequence in context: A121206 A062004 A300268 * A013082 A352639 A197388
KEYWORD
sign,easy
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
Name corrected by Arkadiusz Wesolowski, Sep 01 2012
STATUS
approved