A024249 - OEIS

This site is supported by donations to The OEIS Foundation.

A024249

Expansion of tanh(tan(x))*tan(x)/2.

0, 1, 4, 24, 192, 9472, 1182208, 135668736, 14993473536, 1702145425408, 212302947942400, 32402586267549696, 6715751146400514048, 1845064263947813650432, 597912413872386432040960 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	MATHEMATICA	`Tanh[ Tan[ x ] ]Tan[ x ]/2 ( Even Part *)`
	CROSSREFS	`A009812.` `Sequence in context: A002866 A182798 A073840 * A007145 A101370 A201338` `Adjacent sequences: A024246 A024247 A024248 * A024250 A024251 A024252`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended and signs tested 03/97.`

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

Last modified February 16 17:11 EST 2012. Contains 205938 sequences.