A009197 - OEIS

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A009197

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

1, 1, 0, -3, -6, 35, 135, -476, -6300, 14349, 298515, 254056, -26673042, -26975169, 1931306377, 16803854768, -336040323112, -1435742838615, 20743481564487, 843925791375728, -11354618863953550, -37784454009996005 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	MATHEMATICA	`Exp[ Log[ 1+x ]/Cosh[ x ] ]`
	CROSSREFS	`Sequence in context: A134748 A068904 A143046 * A205336 A184390 A130317` `Adjacent sequences: A009194 A009195 A009196 * A009198 A009199 A009200`
	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 10:03 EST 2012. Contains 206009 sequences.