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A009519 Expansion of e.g.f.: sin(tanh(log(1+x))). 0
0, 1, -1, -1, 12, -44, 0, 1364, -11312, 34588, 378900, -7237396, 57785376, -13438424, -7111845832, 116461238984, -835329363840, -6161526961904, 288993527986032, -4444723274423248, 22035938200252480, 733027816359058816 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,5
LINKS
MATHEMATICA
With[{nn=30}, CoefficientList[Series[Sin[Tanh[Log[1+x]]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Apr 23 2020 *)
CROSSREFS
Sequence in context: A012471 A116187 A009790 * A106808 A296181 A007899
KEYWORD
sign,easy
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
Prior Mathematica program replaced and definition clarified by Harvey P. Dale, Apr 23 2020
STATUS
approved

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Last modified March 29 08:13 EDT 2024. Contains 371265 sequences. (Running on oeis4.)