A009597 - OEIS

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A009597

Expansion of sinh(sinh(ln(1+x))).

0, 1, -1, 4, -18, 106, -750, 6196, -58408, 617716, -7234020, 92842696, -1294948776, 19493497024, -314874396928, 5430592728016, -99578626460160, 1934092698170896, -39660351268817808, 856128235903319296 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	MATHEMATICA	`Sinh[ Sinh[ Log[ 1+x ] ] ]`
	CROSSREFS	`Sequence in context: A051827 A007711 A020114 * A060223 A144085 A003708` `Adjacent sequences: A009594 A009595 A009596 * A009598 A009599 A009600`
	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 15 10:28 EST 2012. Contains 205763 sequences.