A009638 - OEIS

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A009638

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

0, 1, -1, 5, -22, 151, -1186, 11255, -121752, 1493101, -20381896, 306816905, -5045231632, 89977880851, -1729461315856, 35637607318955, -783658693590912, 18315607922069401, -453368586519154816, 11848112075773043405 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	MATHEMATICA	`Tan[ Log[ 1+Sinh[ x ] ] ]`
	CROSSREFS	`Sequence in context: A033462 A111154 A028561 * A121942 A006294 A129437` `Adjacent sequences: A009635 A009636 A009637 * A009639 A009640 A009641`
	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 16 21:51 EST 2012. Contains 205978 sequences.