A012544 - OEIS

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A012544

sech(sinh(x)*arcsin(x))=1-12/4!*x^4-240/6!*x^6+1680/8!*x^8...

1, 0, -12, -240, 1680, 660480, 39530304, -3855231744, -1466146656000, -147651751649280, 43245441015313408, 21785411128189063168, 453349606338812022784, -4374564365537166405795840 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,3`
	LINKS	`Table of n, a(n) for n=0..13.`
	CROSSREFS	`Sequence in context: A012351 A189883 A033469 * A009052 A213449 A012303` `Adjacent sequences: A012541 A012542 A012543 * A012545 A012546 A012547`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (patrick.demichel(AT)hp.com)`
	STATUS	`approved`

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Last modified May 21 00:41 EDT 2019. Contains 323427 sequences. (Running on oeis4.)