id:A009256 - OEIS Search Results

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Expansion of exp(tan(x)^2).

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1, 2, 28, 872, 47248, 3907232, 454886848, 70597546112, 14042505449728, 3475021574246912, 1045247734061145088, 375054668796817221632, 158085597663328138006528, 77269840864693331267919872 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`Exp[ Tan[ x ]^2 ] (* Even Part *)`
	CROSSREFS	`Sequence in context: A098631 A089836 A090249 this_sequence A012725 A012756 A009403` `Adjacent sequences: A009253 A009254 A009255 this_sequence A009257 A009258 A009259`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended and signs tested 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