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A024274 Expansion of e.g.f. tan(sinh(x))*x/2 (even powers only). 0
0, 1, 6, 111, 4060, 239405, 20758914, 2482982971, 391694904056, 78786450217881, 19679892395058750, 5976596329212898631, 2168616275876397830484, 926586406796043293175109, 460466053198842720885132858, 263333906533368208422923536275 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
MATHEMATICA
Tan[ Sinh[ x ]]*x/2 (* Even Part *)
CROSSREFS
Cf. A009683.
Sequence in context: A272391 A197765 A024273 * A162081 A296949 A009612
KEYWORD
nonn
AUTHOR
EXTENSIONS
Extended and signs tested Mar 1997.
More terms from Sean A. Irvine, Jun 26 2019
STATUS
approved

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Last modified May 25 10:09 EDT 2024. Contains 372786 sequences. (Running on oeis4.)