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A343473
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G.f.: 1 + (1*x)/(1 + (2*x)^2/(1 + (3*x)^3/(1 + (4*x)^4/(1 + (5*x)^5/(1 + ...))))).
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2
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1, 1, 0, -4, 0, 16, 108, -64, -864, -2660, -22464, 33968, 272268, 1217152, 4629312, 68208188, -98077824, -1089798320, -5246016084, -32436365248, -180561473568, -3404617719332, 5203858765248, 55902314446832, 354805454664396, 2229923884913920
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OFFSET
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0,4
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LINKS
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PROG
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(PARI) a(n) = my(A=1+O(x)); for(i=1, n, A=1+((n-i+1)*x)^(n-i+1)/A); polcoef(A, n);
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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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