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A362275
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Expansion of e.g.f. exp(x*exp(-x*exp(-x))).
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3
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1, 1, -1, 4, -3, -44, 595, -5214, 36953, -176840, -498969, 31239550, -605916971, 9001842708, -110410388101, 998140500826, -1114748107215, -247879285927184, 8410011463871695, -201620611378992906, 4024515940445770541, -66832538504513547380
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OFFSET
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0,4
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LINKS
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FORMULA
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a(n) = Sum_{i=0..n} (-1)^(n-i) * binomial(n,i) * Sum_{j=0..n-i} i^j * j^(n-i-j) * binomial(n-i,j).
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PROG
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(PARI) my(N=30, x='x+O('x^N)); Vec(serlaplace(exp(x*exp(-x*exp(-x)))))
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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STATUS
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approved
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