A338152 a(n) is the number of acyclic orientations of the edges of an n-dimensional demihypercube.
1, 2, 24, 24024, 193270310, 767795414400
Offset: 1
Links
- Eric Weisstein's World of Mathematics, Halved Cube Graph
Crossrefs
Programs
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Mathematica
Table[Abs[ChromaticPolynomial[GraphData[{"HalvedCube",n}]][-1]],{n,1,6}]
Formula
a(n) = |Sum_{k=0..2^(n-1)} (-1)^k * A334280(n, k)|.