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A009171 Expansion of cosh(tanh(x).exp(x)). +0
1
1, 0, 1, 6, 17, 20, 97, 1498, 7009, -8952, -44991, 2641870, 16678257, -147810468, -1072851167, 22562632802, 182236444097, -3111217127536, -28067216775039, 608465230881302, 6014702853818321, -136728540813908444 (list; graph; listen)
OFFSET

0,4

MATHEMATICA

Cosh[ Tanh[ x ]*Exp[ x ] ]

CROSSREFS

Sequence in context: A063584 A019296 A035484 this_sequence A012417 A017461 A061875

Adjacent sequences: A009168 A009169 A009170 this_sequence A009172 A009173 A009174

KEYWORD

sign,easy

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 21 14:49 EST 2008. Contains 150807 sequences.


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