id:A009837 - OEIS Search Results

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Expansion of tanh(x)tan(x)/2.

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1, 56, 46336, 182844416, 2205641015296, 63603482126974976, 3748468097940723859456, 404963012992964559934324736, 74035562436962891333631597346816 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`Tanh[ x ]Tan[ x ]/2 ( [ x^(4n+2) ] *)`
	CROSSREFS	`A024342.` `Adjacent sequences: A009834 A009835 A009836 this_sequence A009838 A009839 A009840` `Sequence in context: A059073 A115469 A090218 this_sequence A093256 A135315 A135426`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhh(AT)cadence.com)`
	EXTENSIONS	`Extended and signs tested 03/97.`

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Last modified October 6 16:13 EDT 2008. Contains 144667 sequences.

AT&T Labs Research