A012561 - OEIS

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A012561

tanh(sinh(x)*arctan(x))=2/2!*x^2-4/4!*x^4-130/6!*x^6+2200/8!*x^8...

2, -4, -130, 2200, 151258, -9618860, -546359658, 83826810288, 15550415673138, -5684890840251604, 671714199027714350, -198489523044256423096, 248879210344083276692746 (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: A134710 A009073 A326213 * A012558 A012617 A012614` `Adjacent sequences: A012558 A012559 A012560 * A012562 A012563 A012564`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (patrick.demichel(AT)hp.com)`
	STATUS	`approved`

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Last modified March 31 06:14 EDT 2023. Contains 361634 sequences. (Running on oeis4.)