id:A009254 - OEIS Search Results

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Expansion of exp(tan(x)/cosh(x)).

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1, 1, 1, 0, -3, 12, 117, 336, -903, -2096, 111529, 1043328, 687093, -29488704, 320199453, 8894706432, 44530596081, -389860902656, 254346923089, 170568226222080, 2006766293627373, -6327905330549760, -141849542553657147 (list; graph; listen)

	OFFSET	`0,5`
	MATHEMATICA	`Exp[ Tan[ x ]/Cosh[ x ] ]`
	CROSSREFS	`Sequence in context: A068099 A032113 A119649 this_sequence A133987 A010571 A067124` `Adjacent sequences: A009251 A009252 A009253 this_sequence A009255 A009256 A009257`
	KEYWORD	`sign,easy`
	AUTHOR	`R. H. Hardin (rhh(AT)cadence.com)`
	EXTENSIONS	`Extended with signs Mar 15 1997 by Olivier Gerard.`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research