A012073 - OEIS

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A012073

sec(arcsin(arcsin(x)))=1+1/2!*x^2+13/4!*x^4+469/6!*x^6+32985/8!*x^8...

1, 1, 13, 469, 32985, 3818601, 658371429, 158197312701, 50529852678321, 20707179214389201, 10591085815045781949, 6613325759240221954725, 4951199941339632477906825, 4377912560491798717856660025 (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: A198154 A197234 A262570 * A012143 A173403 A220560` `Adjacent sequences: A012070 A012071 A012072 * A012074 A012075 A012076`
	KEYWORD	`nonn`
	AUTHOR	`Patrick Demichel (patrick.demichel(AT)hp.com)`
	STATUS	`approved`

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Last modified March 31 21:40 EDT 2023. Contains 361673 sequences. (Running on oeis4.)