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A024294 Expansion of tan(tan(x))*sinh(x)/2. 0
0, 1, 10, 259, 13716, 1202597, 156277214, 28120098599, 6684923466280, 2028010061105865, 764351278731173810, 350322324985907812811, 191861297592547526873020, 123738773021830120012762477 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..13.

MATHEMATICA

Tan[ Tan[ x ] ]*Sinh[ x ]/2 (* Even Part *)

CROSSREFS

A009699.

Sequence in context: A024293 A120268 A001824 * A183406 A084999 A268730

Adjacent sequences:  A024291 A024292 A024293 * A024295 A024296 A024297

KEYWORD

nonn

AUTHOR

R. H. Hardin

EXTENSIONS

Extended and signs tested 03/97.

STATUS

approved

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Last modified June 14 19:28 EDT 2021. Contains 345038 sequences. (Running on oeis4.)