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A009726 Expansion of tan(x)*cos(ln(1+x)). 0
0, 1, 0, -1, 12, -54, 360, -2094, 15568, -113516, 979200, -8587668, 84989520, -863430840, 9562970144, -108058865368, 1285366485120, -15130564865136, 174638241040896, -1701739763904144, 7392841627579840, 326394843481495456 (list; graph; refs; listen; history; internal format)
OFFSET

0,5

MATHEMATICA

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

CROSSREFS

Sequence in context: A183713 A126399 A137938 * A190948 A143856 A009653

Adjacent sequences:  A009723 A009724 A009725 * A009727 A009728 A009729

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 14 21:50 EST 2012. Contains 205663 sequences.