A024338 - OEIS

This site is supported by donations to The OEIS Foundation.

A024338

Expansion of ln(1+x).ln(1+tan(x))/2.

0, 0, 1, -3, 15, -80, 542, -4158, 37228, -374592, 4237120, -53017712, 729890528, -10957004864, 178355968576, -3129133077376, 58889303575296, -1183497066823680, 25300855990394880, -573326855846475776 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	MATHEMATICA	`With[{nn=20}, CoefficientList[Series[Log[1+x]Log[1+Tan[x]]/2, {x, 0, nn}], x] Range[0, nn]!] (* From Harvey P. Dale, Oct 27 2011 *)`
	CROSSREFS	`A009422.` `Sequence in context: A002514 A093889 A020044 * A003448 A198628 A084120` `Adjacent sequences: A024335 A024336 A024337 * A024339 A024340 A024341`
	KEYWORD	`sign`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended with signs 03/97.`

Content is available under The OEIS End-User License Agreement .

Last modified February 15 21:16 EST 2012. Contains 205856 sequences.