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A338152
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a(n) is the number of acyclic orientations of the edges of an n-dimensional demihypercube.
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3
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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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a(n) = |Sum_{k=0..2^(n-1)} (-1)^k * A334280(n, k)|.
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MATHEMATICA
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Table[Abs[ChromaticPolynomial[GraphData[{"HalvedCube", n}]][-1]], {n, 1, 6}]
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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