id:A009252 - OEIS Search Results

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

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1, 2, 20, 456, 18192, 1111840, 96035136, 11101474944, 1651123634432, 306656507699712, 69472549405824000, 18838618322988648448, 6019938761233443262464, 2237523930630521828745216 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`Exp[ Tan[ x ]x ] ( Even Part *)`
	CROSSREFS	`Sequence in context: A009749 A012533 A009160 this_sequence A012816 A012340 A103353` `Adjacent sequences: A009249 A009250 A009251 this_sequence A009253 A009254 A009255`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhh(AT)cadence.com)`
	EXTENSIONS	`Extended and signs tested Mar 15 1997 by Olivier Gerard.`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

AT&T Labs Research