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A024299 Expansion of ln(1+tanh(x)^2)/2. +0
4
0, 1, -14, 496, -34544, 4055296, -724212224, 183218384896, -62380415842304, 27507260369207296, -15250924309151350784, 10384039093607251050496, -8517991922318587187953664, 8285309769460200661892202496 (list; graph; listen)
OFFSET

0,3

MATHEMATICA

Log[ 1+Tanh[ x ]^2 ]/2 (* Even Part *)

CROSSREFS

A009403.

Cf. A003707, A101921.

Adjacent sequences: A024296 A024297 A024298 this_sequence A024300 A024301 A024302

Sequence in context: A103916 A005790 A128051 this_sequence A109773 A002010 A129007

KEYWORD

sign

AUTHOR

R. H. Hardin (rhh(AT)cadence.com)

EXTENSIONS

Extended with signs 03/97.

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Last modified October 12 15:26 EDT 2008. Contains 144830 sequences.


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