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A009693 Expansion of tan(tan(tanh(x))). +0
1
1, 2, 8, 48, -256, -6656, 930816, -94216192, 9099706368, -822565076992, 27885670498304, 20948024601608192, -10620485000782413824, 3800373452911396519936, -1166459964091299721641984 (list; graph; listen)
OFFSET

0,2

MATHEMATICA

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

CROSSREFS

Sequence in context: A003032 A058928 A004141 this_sequence A104190 A152661 A007170

Adjacent sequences: A009690 A009691 A009692 this_sequence A009694 A009695 A009696

KEYWORD

sign

AUTHOR

R. H. Hardin (rhhardin(AT)att.net)

EXTENSIONS

Extended with signs Mar 15 1997 by Olivier Gerard.

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.


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