id:A009032 - OEIS Search Results

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

+0
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1, 0, -1, 3, -22, 100, -700, 3990, -28628, 171288, -1025420, 1661660, 78215392, -2266954560, 46180065256, -873515610240, 16163533621648, -300558671466048, 5688054655288496, -109993409199908496, 2184633395323803360 (list; graph; listen)

	OFFSET	`0,4`
	MATHEMATICA	`Cos[ Log[ 1+x ]/Cos[ x ] ]`
	CROSSREFS	`Sequence in context: A004305 A095663 A009029 this_sequence A061182 A143552 A006283` `Adjacent sequences: A009029 A009030 A009031 this_sequence A009033 A009034 A009035`
	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 November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research