id:A009237 - OEIS Search Results

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Expansion of exp(tan(ln(1+x))).

+0
1

1, 1, 0, 2, -4, 26, -134, 930, -6728, 53056, -413744, 2752936, -3042040, -488089848, 16658828096, -442856699584, 11075864697536, -274957302952960, 6922538197811392, -178529204224920384, 4739350807332125056 (list; graph; listen)

	OFFSET	`0,4`
	MATHEMATICA	`Exp[ Tan[ Log[ 1+x ] ] ]`
	CROSSREFS	`Sequence in context: A144691 A085700 A087404 this_sequence A019019 A032328 A019034` `Adjacent sequences: A009234 A009235 A009236 this_sequence A009238 A009239 A009240`
	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