A009080 - OEIS

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A009080

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

1, 0, -12, -240, -5936, -155520, -65472, 981903104, 223580862720, 46255608778752, 10060678641587200, 2368138744630923264, 601490101481648443392, 161192778898870464512000, 43208403753541588946141184 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	MATHEMATICA	`Cos[ Tan[ x ]x ] ( Even Part *)`
	CROSSREFS	`Sequence in context: A012538 A006588 A009150 * A002166 A034910 A091745` `Adjacent sequences: A009077 A009078 A009079 * A009081 A009082 A009083`
	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 14 23:53 EST 2012. Contains 205689 sequences.