id:A009010 - OEIS Search Results

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Expansion of 1/cos(tan(x)).

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1, 1, 13, 397, 22265, 1996569, 262056837, 47378857957, 11289999097969, 3429209143916337, 1293273763150662781, 592937704157794933821, 324791587492604492427881, 209490216975221386279672393 (list; graph; listen)

	OFFSET	`0,3`
	MATHEMATICA	`1/Cos[ Tan[ x ] ] (* Even Part *)`
	CROSSREFS	`Sequence in context: A082403 A134498 A142122 this_sequence A075672 A069876 A126086` `Adjacent sequences: A009007 A009008 A009009 this_sequence A009011 A009012 A009013`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhh(AT)cadence.com)`
	EXTENSIONS	`Extended and signs tested Mar 15 1997 by Olivier Gerard.`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

AT&T Labs Research