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A024278
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Expansion of e.g.f.: tan(tan(x))*sin(x)/2.
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0
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0, 1, 6, 179, 9676, 854597, 111361298, 20061390071, 4771665341848, 1447947783210249, 545795035419716382, 250167844738073041595, 137013989756844496168292, 88367083240335992790622797
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OFFSET
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0,3
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LINKS
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Table of n, a(n) for n=0..13.
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MATHEMATICA
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With[{nn=30}, Take[CoefficientList[Series[Tan[Tan[x]]*Sin[x]/2, {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Sep 09 2012 *)
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CROSSREFS
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Cf. A009698.
Sequence in context: A012227 A012152 A165928 * A062240 A253779 A046989
Adjacent sequences: A024275 A024276 A024277 * A024279 A024280 A024281
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin
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EXTENSIONS
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Extended and signs tested 03/97.
Definition clarified by Harvey P. Dale, Sep 09 2012
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STATUS
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approved
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