A009370 - OEIS

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A009370

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

0, 1, -1, 7, -20, 125, -721, 5731, -49440, 505529, -5716921, 72560255, -1009426340, 15366052533, -253286287801, 4501151653979, -85717611666720, 1742059862631537, -37625735499057361, 860703388428813303 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	MATHEMATICA	`Log[ 1+Tan[ x ]]*Cosh[ x ]`
	CROSSREFS	`Sequence in context: A048755 A055267 A196584 * A009372 A051102 A158280` `Adjacent sequences: A009367 A009368 A009369 * A009371 A009372 A009373`
	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 February 15 23:53 EST 2012. Contains 205860 sequences.