id:A009443 - OEIS Search Results

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Expansion of ln(1+x/cosh(x)).

+0
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0, 1, -1, -1, 6, -11, 0, 83, -784, 6921, -34560, -60281, 2821632, -29132611, 184690688, -208438245, -19939461120, 427918448785, -5036475875328, 22588439158415, 504121321717760, -15853957892902395, 258254373528797184 (list; graph; listen)

	OFFSET	`0,5`
	MATHEMATICA	`Log[ 1+x/Cosh[ x ] ]`
	CROSSREFS	`Sequence in context: A153022 A115677 A100129 this_sequence A106540 A134012 A103704` `Adjacent sequences: A009440 A009441 A009442 this_sequence A009444 A009445 A009446`
	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 1 13:27 EST 2009. Contains 167806 sequences.

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