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A009305 Expansion of ln(1+cosh(x).x). +0
1
0, 1, -1, 5, -18, 89, -600, 4717, -42896, 449073, -5287680, 69090581, -993391872, 15583801609, -264816161792, 4846181282685, -95022445824000, 1987373846425697, -44163232640630784, 1039121484066627877 (list; graph; listen)
OFFSET

0,4

MATHEMATICA

Log[ 1+Cosh[ x ]*x ]

CROSSREFS

Sequence in context: A141733 A156305 A151490 this_sequence A097574 A113023 A165962

Adjacent sequences: A009302 A009303 A009304 this_sequence A009306 A009307 A009308

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 December 16 17:18 EST 2009. Contains 170825 sequences.


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