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A032269
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"DIJ" (bracelet, indistinct, labeled) transform of 1,2,3,4,...
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2
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1, 1, 3, 10, 43, 247, 1926, 19414, 236328, 3323205, 52705090, 929220616, 18022413696, 381329741071, 8740799344746, 215767673761410, 5706697328974816, 160994864601428425, 4825786965074938818, 153160879869533780812, 5131078453592054013360, 180944693884489748335731
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OFFSET
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0,3
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LINKS
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FORMULA
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E.g.f.: 1 + (g(x) + g(x)^2/2 - log(1-g(x)))/2 where g(x) = x*exp(x). - Andrew Howroyd, Sep 12 2018
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PROG
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(PARI) seq(n)={my(p=x*exp(x + O(x^n))); Vec(1 + serlaplace(p + p^2/2 - log(1-p))/2)} \\ Andrew Howroyd, Sep 12 2018
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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a(0)=1 prepended and terms a(19) and beyond from Andrew Howroyd, Sep 12 2018
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STATUS
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approved
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