A012677 - OEIS

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A012677

sin(tanh(x)*arctan(x))=2/2!*x^2-16/4!*x^4+200/6!*x^6+1024/8!*x^8...

2, -16, 200, 1024, -765152, 142708480, -27846619008, 6367245656064, -1746851978927616, 576681176370802688, -228223153506206857216, 107581169796591942238208, -59934829639539220412555264 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	CROSSREFS	`Sequence in context: A006335 A051711 A012683 * A158212 A036081 A161568` `Adjacent sequences: A012674 A012675 A012676 * A012678 A012679 A012680`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified February 15 19:02 EST 2012. Contains 205852 sequences.