A012033 - OEIS

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A012033

sech(sin(sinh(x)))=1-1/2!*x^2+5/4!*x^4-13/6!*x^6-407/8!*x^8...

1, -1, 5, -13, -407, 30151, -1142483, 19202427, 3747342929, -722092683505, 76341208430549, -2313301317273981, -1769780901329435719, 628518840135423728599, -125498832189487922441219 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,3`
	LINKS	`Table of n, a(n) for n=0..14.`
	CROSSREFS	`Sequence in context: A067135 A122900 A145557 * A007540 A290171 A157250` `Adjacent sequences: A012030 A012031 A012032 * A012034 A012035 A012036`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (patrick.demichel(AT)hp.com)`
	STATUS	`approved`

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Last modified January 20 06:07 EST 2019. Contains 319323 sequences. (Running on oeis4.)