A009797 - OEIS

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A009797

Expansion of tanh(sin(x))/cos(x).

1, 0, 32, -336, 31744, -1588224, 207515648, -24843657216, 4860991111168, -1034712438669312, 295553381961826304, -96277515461273321472, 38465285132060037480448, -17609621553067367199670272 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	MATHEMATICA	`Tanh[ Sin[ x ] ]/Cos[ x ] (* Odd Part *)`
	CROSSREFS	`Sequence in context: A192075 A201152 A145402 * A006763 A158074 A200531` `Adjacent sequences: A009794 A009795 A009796 * A009798 A009799 A009800`
	KEYWORD	`sign`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended with signs Mar 15 1997 by Olivier Gerard.`

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Last modified February 17 21:13 EST 2012. Contains 206085 sequences.