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A166734
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Determinant of the adjacency matrix of the n-cube graph Q_n
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0
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OFFSET
| 0,4
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REFERENCES
| N. Biggs, Algebraic Graph Theory, Cambridge Univ. Press 1974, p.145
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FORMULA
| a(n)=prod(j=0, n, (n-2j)^binomial(n,j)).
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EXAMPLE
| a(3) = (3^1)*(1^3)*((-1)^3)*((-3)^1) = 3*1*(-1)*(-3) = 9.
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CROSSREFS
| Sequence in context: A178912 A191564 A067479 * A155783 A175764 A121935
Adjacent sequences: A166731 A166732 A166733 * A166735 A166736 A166737
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KEYWORD
| easy,sign
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AUTHOR
| Franz Vrabec (franz.vrabec(AT)aon.at), Oct 20 2009
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