A024233 - OEIS

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A024233

Expansion of tan(tanh(x))*sin(x)/2.

0, 1, -2, -21, 668, -8363, -597350, 76652415, -5349200200, 94006240681, 53961261562294, -13137846911653101, 1863043894828247636, -101535637135541768963, -32156707726436068717742 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	MATHEMATICA	`Tan[ Tanh[ x ] ]Sin[ x ]/2 ( Even Part *)`
	CROSSREFS	`A009717.` `Sequence in context: A060319 A095224 A034984 * A015209 A113083 A174964` `Adjacent sequences: A024230 A024231 A024232 * A024234 A024235 A024236`
	KEYWORD	`sign`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended with signs 03/97.`

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Last modified February 15 03:11 EST 2012. Contains 205694 sequences.