A012828 - OEIS

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A012828

arcsinh(sec(x)*arcsinh(x))=x+1/3!*x^3+13/5!*x^5-163/7!*x^7+12409/9!*x^9...

1, 1, 13, -163, 12409, -931207, 131515525, -22736601067, 5414338951025, -1621869733040399, 608306871018022013, -276781704508170478131, 150811097250449098751721, -96804685135198494755720343 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	CROSSREFS	`Sequence in context: A133180 A090134 A087400 * A119539 A171318 A078362` `Adjacent sequences: A012825 A012826 A012827 * A012829 A012830 A012831`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified February 16 09:00 EST 2012. Contains 205904 sequences.