id:A009273 - OEIS Search Results

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Expansion of exp(tanh(x).x).

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1, 2, 4, -24, 400, -5600, -103872, 26975872, -3438685952, 417995260416, -51382607559680, 5994623640856576, -454930757753597952, -94991612229069430784, 81515752167646959124480 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`Exp[ Tanh[ x ]x ] ( Even Part *)`
	CROSSREFS	`Sequence in context: A047677 A030276 A081476 this_sequence A128299 A143672 A001510` `Adjacent sequences: A009270 A009271 A009272 this_sequence A009274 A009275 A009276`
	KEYWORD	`sign`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended with signs Mar 15 1997 by Olivier Gerard.`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

AT&T Labs Research