A009600 - OEIS

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A009600

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

1, 56, 5056, -8648704, -7517057024, 82066777604096, 27511745714323456, -8171138983967372345344, 74351622296124892534276096, 3458659437902679786800310910976 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	MATHEMATICA	`Sinh[ Sinh[ x ]Sin[ x ] ]/2 ( [ x^(4n+2) ] *)`
	CROSSREFS	`Cf. A012528.` `Sequence in context: A042513 A003747 A049033 * A202565 A180372 A201240` `Adjacent sequences: A009597 A009598 A009599 * A009601 A009602 A009603`
	KEYWORD	`sign`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended with signs 03/97.`

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Last modified February 16 07:10 EST 2012. Contains 205874 sequences.