id:A009367 - OEIS Search Results

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

+0
1

0, 1, -1, 2, -6, 16, -72, 496, -3248, 24064, -208384, 1908224, -19624704, 227958784, -2800573440, 36620830720, -519452284928, 7865201852416, -126035093291008, 2142236553248768, -38449509963399168, 725477781101608960 (list; graph; listen)

	OFFSET	`0,4`
	MATHEMATICA	`Log[ 1+Tan[ Tanh[ x ] ] ]`
	CROSSREFS	`Sequence in context: A009186 A009328 A009346 this_sequence A114249 A147910 A147902` `Adjacent sequences: A009364 A009365 A009366 this_sequence A009368 A009369 A009370`
	KEYWORD	`sign,easy`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended with signs Mar 15 1997 by Olivier Gerard.`

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Last modified December 4 12:48 EST 2009. Contains 170310 sequences.

AT&T Labs Research