A009180 - OEIS

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A009180

Expansion of cosh(x)/cos(ln(1+x)).

1, 0, 2, -3, 23, -130, 1016, -8925, 90369, -1027332, 12980406, -180372995, 2734039527, -44890794078, 793705143908, -15034678005165, 303761462921921, -6520477426903400, 148194700045065674, -3555110881720345347 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	MATHEMATICA	`Cosh[ x ]/Cos[ Log[ 1+x ] ]`
	CROSSREFS	`Sequence in context: A090180 A009130 A093504 * A041459 A126702 A020458` `Adjacent sequences: A009177 A009178 A009179 * A009181 A009182 A009183`
	KEYWORD	`sign,easy`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended with signs Mar 15 1997 by Olivier Gerard.`

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Last modified February 17 06:27 EST 2012. Contains 205998 sequences.