A009521 - OEIS

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A009521

Expansion of sin(tanh(tan(x))).

1, -1, -7, 55, 2897, -5105, -7252983, -341550201, 43255573537, 11238852308639, 963068748879257, -153386988236833449, -82902651997417876879, -17679532127297031010385, -779530123182446522616663 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	MATHEMATICA	`Sin[ Tanh[ Tan[ x ] ]] (* Odd Part *)`
	CROSSREFS	`Sequence in context: A117993 A055056 A197228 * A116120 A056719 A038855` `Adjacent sequences: A009518 A009519 A009520 * A009522 A009523 A009524`
	KEYWORD	`sign`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended with signs Mar 15 1997 by Olivier Gerard.`

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Last modified February 16 07:07 EST 2012. Contains 205871 sequences.