id:A024239 - OEIS Search Results

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

+0
1

0, 1, 2, -89, -2668, 60541, 12497462, 330911491, -136964474008, -21093217440839, 2139299892644522, 1436807195496088351, 96866149734285315452, -134387439014403900337739, -47862471480153106563898018 (list; graph; listen)

	OFFSET	`0,3`
	MATHEMATICA	`Tanh[ Tan[ x ]Sin[ x ] ]/2 ( Even Part *)`
	CROSSREFS	`A009815.` `Sequence in context: A161676 A023302 A041967 this_sequence A076532 A157064 A058527` `Adjacent sequences: A024236 A024237 A024238 this_sequence A024240 A024241 A024242`
	KEYWORD	`sign`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended with signs 03/97.`

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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.

AT&T Labs Research