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A305786
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Inverse Euler transform of (-1)^n * n!.
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2
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-1, 2, -4, 17, -92, 576, -4156, 34159, -314368, 3199936, -35703996, 433421495, -5687955724, 80256879068, -1211781887796, 19496946534720, -333041104402860, 6019770247224496, -114794574818830716, 2303332661416242633, -48509766592884311132, 1069983257387168051076
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OFFSET
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1,2
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LINKS
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FORMULA
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Product_{k>=1} 1/(1-x^k)^{a(k)} = Sum_{n>=0} (-1)^n * n! * x^n.
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EXAMPLE
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(1-x) * (1-x^2)^(-2) * (1-x^3)^4 * (1-x^4)^(-17) * ... = 1 - x + 2*x^2 - 6*x^3 + 24*x^4 - ... .
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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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