A009106 - OEIS

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A009106

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

1, 0, 8, 216, 12032, 1075328, 140944000, 25464568832, 6065774456832, 1842040163078144, 694620312112857088, 318448731218429771776, 174429761567957718302720, 112504917152076237383401472 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	MATHEMATICA	`Cos[ x ]/Cos[ Tan[ x ] ] (* Even Part *)`
	CROSSREFS	`Sequence in context: A009072 A002897 A024289 * A000442 A115964 A188680` `Adjacent sequences: A009103 A009104 A009105 * A009107 A009108 A009109`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended and signs tested Mar 15 1997 by Olivier Gerard.`

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Last modified February 16 20:14 EST 2012. Contains 205962 sequences.