id:A024266 - OEIS Search Results

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

+0
1

0, 1, 4, 184, 8256, 791552, 99776000, 18222789632, 4310149906432, 1310908146057216, 493677023283642368, 226366154168309645312, 123958777998669625950208, 79952265836019615061245952 (list; graph; listen)

	OFFSET	`0,3`
	MATHEMATICA	`Tanh[ x ]Tan[ Tan[ x ] ]/2 ( Even Part *)`
	CROSSREFS	`A009836.` `Adjacent sequences: A024263 A024264 A024265 this_sequence A024267 A024268 A024269` `Sequence in context: A127606 A041945 A082393 this_sequence A102194 A102191 A123116`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhh(AT)cadence.com)`
	EXTENSIONS	`Extended and signs tested 03/97.`

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Last modified October 12 15:26 EDT 2008. Contains 144830 sequences.

AT&T Labs Research