OFFSET
0,3
LINKS
N. J. A. Sloane, Transforms
FORMULA
a(n) ~ tan(1) * n^n. - Vaclav Kotesovec, Jun 08 2019
MATHEMATICA
Table[n! SeriesCoefficient[Exp[n x] Tan[x], {x, 0, n}], {n, 0, 19}]
Table[I^(n + 1) 2^(n - 1) (EulerE[n, (-I/2) n] - EulerE[n, 1 - (I/2) n]), {n, 0, 19}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Ilya Gutkovskiy, Apr 10 2018
STATUS
approved