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A009709 Expansion of tan(tan(x)/cosh(x)). +0
1
1, 1, 17, 593, 19425, 1598177, 158823537, 20206883505, 3739345763009, 800168319488705, 218377697922437073, 71589148444259595281, 27561852243967184213153, 12547454880768646146119585 (list; graph; listen)
OFFSET

0,3

MATHEMATICA

Tan[ Tan[ x ]/Cosh[ x ] ] (* Odd Part *)

CROSSREFS

Sequence in context: A056771 A041547 A041544 this_sequence A094133 A162490 A142744

Adjacent sequences: A009706 A009707 A009708 this_sequence A009710 A009711 A009712

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.


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