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A009180 Expansion of cosh(x)/cos(ln(1+x)). 0
1, 0, 2, -3, 23, -130, 1016, -8925, 90369, -1027332, 12980406, -180372995, 2734039527, -44890794078, 793705143908, -15034678005165, 303761462921921, -6520477426903400, 148194700045065674, -3555110881720345347 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

MATHEMATICA

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

CROSSREFS

Sequence in context: A090180 A009130 A093504 * A041459 A126702 A020458

Adjacent sequences:  A009177 A009178 A009179 * A009181 A009182 A009183

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 February 17 06:27 EST 2012. Contains 205998 sequences.