A009414 - OEIS

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A009414

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

0, 1, -1, 5, -12, 89, -345, 3093, -17136, 178065, -1313865, 15537125, -145520364, 1937055977, -22215578385, 330407321013, -4508998213440, 74499864979361, -1181547581150961, 21576252384049093, -389965846387214380 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	MATHEMATICA	`Log[ 1+x ]*Cosh[ Tan[ x ] ]`
	CROSSREFS	`Sequence in context: A202203 A074245 A064371 * A009426 A009731 A009427` `Adjacent sequences: A009411 A009412 A009413 * A009415 A009416 A009417`
	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 18:18 EST 2012. Contains 205835 sequences.