A009750 - OEIS

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A009750

Expansion of tan(x)*tan(tan(x)).

0, 2, 24, 688, 36992, 3234304, 418499584, 75077748736, 17816420974592, 5399699170000896, 2034070241589854208, 932012713402719797248, 510363278595553899839488, 329128604050609873851777024 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	MATHEMATICA	`Tan[ x ]Tan[ Tan[ x ] ] ( Even Part *)`
	CROSSREFS	`Sequence in context: A012375 A012750 A174997 * A030438 A012723 A069150` `Adjacent sequences: A009747 A009748 A009749 * A009751 A009752 A009753`
	KEYWORD	`nonn`
	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 February 15 11:25 EST 2012. Contains 205777 sequences.