A012427 - OEIS

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A012427

tanh(arctan(x)*sin(x))=2/2!*x^2-12/4!*x^4-50/6!*x^6+12936/8!*x^8...

2, -12, -50, 12936, -885062, 19509820, 8446530118, -2256645131888, 271169972750322, 52894208663673604, -48060787092036123330, 16320006114052519358744, -62047368403218100000854 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,1`
	LINKS	`Table of n, a(n) for n=0..12.`
	CROSSREFS	`Sequence in context: A241683 A341546 A012423 * A012695 A012382 A198008` `Adjacent sequences: A012424 A012425 A012426 * A012428 A012429 A012430`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (patrick.demichel(AT)hp.com)`
	STATUS	`approved`

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Last modified March 30 12:33 EDT 2023. Contains 361618 sequences. (Running on oeis4.)