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A024336 Expansion of e.g.f.: tan(log(1+x)^2)/2. 0
0, 0, 1, -3, 11, -50, 394, -4284, 51708, -653904, 8861256, -132180840, 2186984040, -39706739280, 779193951600, -16356660384960, 365503727198400, -8673545006246400, 218077259881872000, -5792698031011056000 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
LINKS
MATHEMATICA
With[{nn=20}, CoefficientList[Series[Tan[Log[1+x]^2]/2, {x, 0, nn}], x]Range[0, nn]!] (* Harvey P. Dale, Sep 19 2012 *)
CROSSREFS
Cf. A009655.
Sequence in context: A321607 A024335 A203009 * A145144 A367560 A284702
KEYWORD
sign
AUTHOR
EXTENSIONS
Extended with signs Mar 1997
Definition clarified by Harvey P. Dale, Sep 19 2012
STATUS
approved

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)