A009397 - OEIS

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A009397

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

0, 2, -16, 422, -22216, 1971002, -265691116, 50700975782, -13016429899216, 4327444080299762, -1808838826865938516, 928500311849311382942, -574198882099583321361016, 421058394568919310756145322 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	MATHEMATICA	`Log[ 1+Tanh[ x ]Sinh[ x ] ] ( Even Part *)`
	CROSSREFS	`Sequence in context: A181213 A130276 A027871 * A009700 A012030 A012682` `Adjacent sequences: A009394 A009395 A009396 * A009398 A009399 A009400`
	KEYWORD	`sign`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended with signs Mar 15 1997 by Olivier Gerard.`

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Last modified February 15 13:49 EST 2012. Contains 205810 sequences.