id:A009380 - OEIS Search Results

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

+0
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0, 1, -1, 7, -26, 185, -1336, 12367, -129296, 1558865, -21045376, 316097527, -5218370816, 94003171145, -1834192393216, 38543705698687, -867785366030336, 20840298552277025, -531767959826169856, 14366953364916735847 (list; graph; listen)

	OFFSET	`0,4`
	MATHEMATICA	`Log[ 1+Tan[ x ]/Cos[ x ]]`
	CROSSREFS	`Sequence in context: A026617 A026683 A009375 this_sequence A098948 A015873 A022271` `Adjacent sequences: A009377 A009378 A009379 this_sequence A009381 A009382 A009383`
	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