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E.g.f.: (-1/3)*LambertW(-3*x).
G. C. Greubel, <a href="/A052756/b052756.txt">Table of n, a(n) for n = 0..330</a>
E.g.f.: (-1/3)*LambertW(-3*x).
(PARI) x='x+O('x^50); concat([0], Vec(serlaplace((-1/3)*lambertw(-3*x)))) \\ G. C. Greubel, Nov 05 2017
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0, 1, 6, 81, 1728, 50625, 1889568, 85766121, 4586471424, 282429536481, 19683000000000, 1531578985264449, 131621703842267136, 12381557655576425121, 1265437718438866624512, 139628860198736572265625, 16543163447903718821855232, 2094704750199298376445300801
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New name using e.g.f., _ by _Vaclav Kotesovec_, Sep 30 2013
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E.g.f.: -1/3*LambertW(-3*x).
a(n) = [x^n] x/(1 - 3*n*x). - Ilya Gutkovskiy, Oct 12 2017
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