id:A009722 - OEIS Search Results

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Expansion of tan(x)*sin(x)/2.

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1, 176, 570496, 9223556096, 460993706622976, 55266063875773300736, 13556412676746128524312576, 6098119622978353294582319415296, 4642750780653941150969313976486199296 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`Tan[ Tanh[ x ]Tan[ x ] ]/2 ( [ x^(4n+2) ] *)`
	CROSSREFS	`A012669.` `Sequence in context: A158818 A035829 A159426 this_sequence A159442 A046189 A164843` `Adjacent sequences: A009719 A009720 A009721 this_sequence A009723 A009724 A009725`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended and signs tested 03/97.`

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Last modified December 3 22:15 EST 2009. Contains 170310 sequences.

AT&T Labs Research