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A283339
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Expansion of exp( Sum_{n>=1} -sigma_9(n)*x^n/n ) in powers of x.
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6
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1, -1, -256, -6305, -26335, 1321887, 32565169, 276211695, -2659962750, -111341327890, -1454216029918, -3323783801026, 227018039015019, 4636828146319845, 39615489757794355, -132865771935151820, -9075288352543844755, -132703303201618610765
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OFFSET
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0,3
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LINKS
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Seiichi Manyama, Table of n, a(n) for n = 0..1000
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FORMULA
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G.f.: Product_{n>=1} (1 - x^n)^(n^8).
a(n) = -(1/n)*Sum_{k=1..n} sigma_9(k)*a(n-k).
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CROSSREFS
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Column k=8 of A283272.
Cf. A023877 (exp( Sum_{n>=1} sigma_9(n)*x^n/n )).
Cf. exp( Sum_{n>=1} -sigma_k(n)*x^n/n ): A010815 (k=1), A073592 (k=2), A283263 (k=3), A283264 (k=4), A283271 (k=5), A283336 (k=6), A283337 (k=7), A283338 (k=8), this sequence (k=9), A283340 (k=10).
Sequence in context: A195595 A204567 A077072 * A128698 A283576 A203284
Adjacent sequences: A283336 A283337 A283338 * A283340 A283341 A283342
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KEYWORD
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sign
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AUTHOR
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Seiichi Manyama, Mar 05 2017
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STATUS
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approved
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