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A130105
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a(n)=(2n)!*B_n, B_n=n-th Bernoulli number.
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0
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1, -1, 4, 0, -1344, 0, 11404800, 0, -697426329600, 0, 184310758195200000, 0, -157043899486325440512000, 0, 355703068713666170585088000000, 0, -1866165170959155879636916764672000000, 0
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OFFSET
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0,3
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COMMENTS
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LINKS
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FORMULA
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a(n)=(2n)!*sum{k=0..n,(1/(k+1))*sum{j=0..k,(-1)^j*C(k,j)*j^n}};
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CROSSREFS
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KEYWORD
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easy,sign
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AUTHOR
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STATUS
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approved
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