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A024260 Expansion of tan(sinh(x))*sin(x)/2. 0
0, 1, 4, 84, 3104, 182992, 15879616, 1899519552, 299663676416, 60275691043072, 15056174185477120, 4572421127353660416, 1659109785538909134848, 708889217194131401101312, 352281692447248422944948224 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..14.

MATHEMATICA

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

CROSSREFS

A009682.

Sequence in context: A156477 A024259 A357672 * A099706 A012065 A012139

Adjacent sequences: A024257 A024258 A024259 * A024261 A024262 A024263

KEYWORD

nonn

AUTHOR

R. H. Hardin

EXTENSIONS

Extended and signs tested 03/97.

STATUS

approved

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Last modified November 26 13:43 EST 2022. Contains 358362 sequences. (Running on oeis4.)