A013112 - OEIS

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A013112

cosh(arcsinh(x)+arctan(x))=1+4/2!*x^2-8/4!*x^4+70/6!*x^6-920/8!*x^8...

1, 4, -8, 70, -920, -28550, 10642900, -2554095050, 685535422000, -219648785612750, 84602550046787500, -38917136125065331250, 21166653214210218325000, -13470291608750677967093750 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	CROSSREFS	`Sequence in context: A086891 A117636 A051226 * A206346 A068208 A090254` `Adjacent sequences: A013109 A013110 A013111 * A013113 A013114 A013115`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified February 14 02:38 EST 2012. Contains 205567 sequences.