A009427 - OEIS

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A009427

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

0, 1, -1, 5, -12, 109, -405, 4913, -24976, 372633, -2419425, 42646845, -338219244, 6863821509, -64452230661, 1478191260393, -16062969072000, 410493211996977, -5072547848554017, 142840036992492789, -1979718755185227180 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	MATHEMATICA	`Log[ 1+x ]/Cos[ Tan[ x ] ]`
	CROSSREFS	`Sequence in context: A009414 A009426 A009731 * A009754 A096314 A195538` `Adjacent sequences: A009424 A009425 A009426 * A009428 A009429 A009430`
	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 06:46 EST 2012. Contains 205867 sequences.