id:A009723 - OEIS Search Results

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

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1, 3, 57, 1995, 128881, 12775059, 1796958633, 342118793307, 84276974508769, 26141579246291235, 9956883572644073241, 4570240365824839488747, 2487549038143714062879313, 1584207614996350912703688627 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`Tan[ Tanh[ x ]/Cos[ x ] ] (* Odd Part *)`
	CROSSREFS	`Sequence in context: A139746 A053725 A053774 this_sequence A069992 A012196 A012090` `Adjacent sequences: A009720 A009721 A009722 this_sequence A009724 A009725 A009726`
	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 29 17:54 EDT 2008. Contains 143238 sequences.

AT&T Labs Research