A024294 Expansion of tan(tan(x))*sinh(x)/2.

0, 1, 10, 259, 13716, 1202597, 156277214, 28120098599, 6684923466280, 2028010061105865, 764351278731173810, 350322324985907812811, 191861297592547526873020, 123738773021830120012762477

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: A361559 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