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A009139 Expansion of cosh(ln(1+x)/exp(x)). +0
1
1, 0, 1, -9, 60, -390, 2820, -24010, 238336, -2659104, 32417160, -426027008, 6004088112, -90491148176, 1454386367616, -24843370627920, 449435283828992, -8582294948325760, 172476215457600000, -3638420414864043264 (list; graph; listen)
OFFSET

0,4

MATHEMATICA

Cosh[ Log[ 1+x ]/Exp[ x ] ]

CROSSREFS

Sequence in context: A082150 A026785 A153820 this_sequence A086018 A159037 A138589

Adjacent sequences: A009136 A009137 A009138 this_sequence A009140 A009141 A009142

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 15 00:47 EST 2009. Contains 170825 sequences.


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