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A009106 Expansion of cos(x)/cos(tan(x)). +0
1
1, 0, 8, 216, 12032, 1075328, 140944000, 25464568832, 6065774456832, 1842040163078144, 694620312112857088, 318448731218429771776, 174429761567957718302720, 112504917152076237383401472 (list; graph; listen)
OFFSET

0,3

MATHEMATICA

Cos[ x ]/Cos[ Tan[ x ] ] (* Even Part *)

CROSSREFS

Adjacent sequences: A009103 A009104 A009105 this_sequence A009107 A009108 A009109

Sequence in context: A009072 A002897 A024289 this_sequence A000442 A115964 A055350

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhh(AT)cadence.com)

EXTENSIONS

Extended and signs tested Mar 15 1997 by Olivier Gerard.

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Last modified October 6 16:13 EDT 2008. Contains 144667 sequences.


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