A012817 - OEIS

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A012817

arcsinh(sec(x)*sinh(x))=x+3/3!*x^3+5/5!*x^5-217/7!*x^7+2505/9!*x^9...

1, 3, 5, -217, 2505, 765963, -6838195, -9335128657, 286658869905, 407628336475923, -19130907180121195, -42164783730598660297, 3124552441785986300505, 9154657902519091515622683 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	CROSSREFS	`Sequence in context: A092947 A104996 A175133 * A087367 A058846 A101331` `Adjacent sequences: A012814 A012815 A012816 * A012818 A012819 A012820`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified February 17 11:46 EST 2012. Contains 206011 sequences.