id:A009721 - OEIS Search Results

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

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0, 1, 2, 3, 20, 157, 902, 6895, 77352, 837145, 9239882, 124480059, 1864519868, 28461793141, 470175087566, 8596601614567, 165789417707088, 3347308657310641, 72262366126097810, 1655981959056540147 (list; graph; listen)

	OFFSET	`0,3`
	MATHEMATICA	`Tan[ Tanh[ x ]*Exp[ x ] ]`
	CROSSREFS	`Sequence in context: A042441 A128977 A069323 this_sequence A013340 A012416 A006246` `Adjacent sequences: A009718 A009719 A009720 this_sequence A009722 A009723 A009724`
	KEYWORD	`nonn,easy`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended and signs tested Mar 15 1997 by Olivier Gerard.`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research