A009422 - OEIS

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A009422

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

0, 0, 2, -6, 30, -160, 1084, -8316, 74456, -749184, 8474240, -106035424, 1459781056, -21914009728, 356711937152, -6258266154752, 117778607150592, -2366994133647360, 50601711980789760, -1146653711692951552 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,3`
	LINKS	`Table of n, a(n) for n=0..19.`
	MATHEMATICA	`Log[ 1+x ]*Log[ 1+Tan[ x ] ]`
	CROSSREFS	`Sequence in context: A192446 A218940 A005432 * A057221 A180892 A196497` `Adjacent sequences: A009419 A009420 A009421 * A009423 A009424 A009425`
	KEYWORD	`sign,easy`
	AUTHOR	`R. H. Hardin`
	EXTENSIONS	`Extended with signs Mar 15 1997 by Olivier Gerard.`
	STATUS	`approved`

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Last modified May 26 04:15 EDT 2013. Contains 225653 sequences.