A009751 - OEIS

This site is supported by donations to The OEIS Foundation.

A009751

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

0, 2, 8, 48, 2176, 72704, 2567168, 320538624, 23648567296, 2869964963840, 550752408829952, 81617924549246976, 20769854695130791936, 5449382125873097867264, 1599364150040158382587904 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	MATHEMATICA	`Tan[ x ]Tan[ Tanh[ x ] ] ( Even Part *)`
	CROSSREFS	`Sequence in context: A079802 A009741 A009745 * A183070 A032116 A088181` `Adjacent sequences: A009748 A009749 A009750 * A009752 A009753 A009754`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended and signs tested Mar 15 1997 by Olivier Gerard.`

Content is available under The OEIS End-User License Agreement .

Last modified February 14 07:52 EST 2012. Contains 205597 sequences.