A009310 - OEIS

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A009310

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

0, 1, -2, 9, -51, 384, -3506, 38126, -479770, 6872392, -110410296, 1967181840, -38502498592, 821352161200, -18969587297792, 471608373782864, -12558441874756176, 356636706706414848, -10759204665600245888 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	MATHEMATICA	`Log[ 1+Log[ 1+Tan[ x ] ] ]`
	CROSSREFS	`Sequence in context: A020087 A079836 A026945 * A091319 A193465 A003584` `Adjacent sequences: A009307 A009308 A009309 * A009311 A009312 A009313`
	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 14 23:53 EST 2012. Contains 205689 sequences.