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A009128 Expansion of cosh(ln(1+x))*cos(x). 0
1, 0, 0, -3, 7, -30, 194, -1365, 10893, -98028, 980324, -10783575, 129402835, -1682236842, 23551315878, -353269738185, 5652315810841, -96089368784280, 1729608638117192, -32862564124226667, 657251282484533151 (list; graph; refs; listen; history; internal format)
OFFSET

0,4

MATHEMATICA

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

CROSSREFS

Sequence in context: A132105 A019021 A110505 * A053648 A138862 A080173

Adjacent sequences:  A009125 A009126 A009127 * A009129 A009130 A009131

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 15 11:21 EST 2012. Contains 205777 sequences.