A012084 - OEIS

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A012084

cosh(arcsin(tan(x)))=1+1/2!*x^2+13/4!*x^4+421/6!*x^6+26713/8!*x^8...

1, 1, 13, 421, 26713, 2871241, 473357413, 111506036461, 35624155784113, 14838126699784081, 7813931867856058813, 5076900281143623362101, 3989607021222775392853513, 3730016905780866035656178521 (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: A100872 A012045 A012109 * A114759 A260871 A260851` `Adjacent sequences: A012081 A012082 A012083 * A012085 A012086 A012087`
	KEYWORD	`nonn`
	AUTHOR	`Patrick Demichel (patrick.demichel(AT)hp.com)`
	STATUS	`approved`

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Last modified December 6 19:52 EST 2023. Contains 367614 sequences. (Running on oeis4.)