A009039 - OEIS

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A009039

Expansion of cos(sin(tan(x))).

1, -1, -3, 27, 2425, 143031, 8956533, 618394579, 46232494321, 3608163168111, 254307747662573, -15725973912655477, -32163339922362247575, -26444005741558393208281, -19705272022676306432282267 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	MATHEMATICA	`Cos[ Sin[ Tan[ x ] ] ] (* Even Part *)`
	CROSSREFS	`Sequence in context: A184278 A158113 A078233 * A137092 A170921 A122215` `Adjacent sequences: A009036 A009037 A009038 * A009040 A009041 A009042`
	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 14:50 EST 2012. Contains 206050 sequences.