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A329968
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a(0) = 1; a(n) = Sum_{k=1..n} |Stirling1(n,k)| * a(n-k).
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1
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1, 1, 2, 8, 77, 2329, 302564, 222085736, 1123297137786, 45315713537365706, 16445319538981321524068, 59677257201788875416461684008, 2382127122661172512076372104185900762, 1141042791864963721866517729601372480006639394
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OFFSET
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0,3
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LINKS
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MATHEMATICA
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a[n_] := a[n] = Sum[Abs[StirlingS1[n, k]] a[n - k], {k, 1, n}]; a[0] = 1; Table[a[n], {n, 0, 13}]
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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