A009754 - OEIS

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A009754

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

0, 1, 0, 5, -12, 116, -720, 7048, -67648, 789124, -9839520, 137625652, -2079277200, 34199202272, -604204537664, 11450703405872, -231315430836480, 4966162863717008, -112867805704455936, 2707812372195278800 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	MATHEMATICA	`Tan[ x ]/Cos[ Log[ 1+x ] ]`
	CROSSREFS	`Sequence in context: A009426 A009731 A009427 * A096314 A195538 A047658` `Adjacent sequences: A009751 A009752 A009753 * A009755 A009756 A009757`
	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 15:50 EST 2012. Contains 205931 sequences.