A009646 - OEIS

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A009646

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

0, 1, -1, 7, -24, 175, -1155, 10477, -100968, 1147901, -14251005, 197307251, -2969362176, 48613104059, -856679861583, 16197513235945, -326703748009200, 7005133086139705, -159063002342367705, 3813308579832354079 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	MATHEMATICA	`Tan[ Log[ 1+x ]]/Cos[ x ]`
	CROSSREFS	`Sequence in context: A153577 A009643 A108095 * A009650 A111753 A198055` `Adjacent sequences: A009643 A009644 A009645 * A009647 A009648 A009649`
	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 17 21:13 EST 2012. Contains 206085 sequences.