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A009719 Expansion of tan(tanh(x))/cos(x). +0
1
1, 3, 17, 371, 11329, 398211, 31717649, 2487281075, 257775723265, 40422383525763, 6249491749613201, 1324448178268807283, 327217658581539104833, 91010297536273890164739 (list; graph; listen)
OFFSET

0,2

MATHEMATICA

Tan[ Tanh[ x ] ]/Cos[ x ] (* Odd Part *)

CROSSREFS

Sequence in context: A051294 A144033 A098138 this_sequence A128300 A001601 A061119

Adjacent sequences: A009716 A009717 A009718 this_sequence A009720 A009721 A009722

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 December 6 22:55 EST 2009. Contains 170429 sequences.


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