A009529 - OEIS

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A009529

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

1, -4, -79664, -627244864, -10054978651904, -281464457981584384, -9106562752258155720704, 743620567656757236530855936, 627496952440053395297142177857536 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	MATHEMATICA	`Sin[ Tanh[ x ]Tan[ x ] ]/2 ( [ x^(4n+2) ] *)`
	CROSSREFS	`A012667.` `Sequence in context: A074318 A102200 A066544 * A193151 A034209 A058430` `Adjacent sequences: A009526 A009527 A009528 * A009530 A009531 A009532`
	KEYWORD	`sign`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended with signs 03/97.`

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Last modified February 16 17:11 EST 2012. Contains 205938 sequences.