id:A009081 - OEIS Search Results

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

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1, -1, -19, -517, -18023, -587529, 19183749, 12219870323, 3379214470193, 883981857320943, 238930492488456221, 66829754023676225259, 18410558239851140719561, 4167711609283156286652647 (list; graph; listen)

	OFFSET	`0,3`
	MATHEMATICA	`Cos[ Tan[ x ]/Cos[ x ] ] (* Even Part *)`
	CROSSREFS	`Sequence in context: A081686 A003700 A093975 this_sequence A057644 A027406 A053116` `Adjacent sequences: A009078 A009079 A009080 this_sequence A009082 A009083 A009084`
	KEYWORD	`sign`
	AUTHOR	`R. H. Hardin (rhh(AT)cadence.com)`
	EXTENSIONS	`Extended with signs Mar 15 1997 by Olivier Gerard.`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research