id:A009398 - OEIS Search Results

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Expansion of ln(1+tanh(x)*tan(x)).

+0
2

0, 2, -12, 352, -16352, 1382912, -172372992, 30716649472, -7334631698432, 2270814362796032, -883463096359452672, 422158497266733678592, -243014206258719292915712, 165880670114405086398513152 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`Log[ 1+Tanh[ x ]Tan[ x ] ] ( Even Part *)`
	CROSSREFS	`Adjacent sequences: A009395 A009396 A009397 this_sequence A009399 A009400 A009401` `Sequence in context: A060596 A074257 A105231 this_sequence A009698 A012724 A012624`
	KEYWORD	`sign`
	AUTHOR	`R. H. Hardin (rhh(AT)cadence.com)`
	EXTENSIONS	`Extended with signs Mar 15 1997 by Olivier Gerard.`

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Last modified October 10 20:39 EDT 2008. Contains 144831 sequences.

AT&T Labs Research