OFFSET
1,3
LINKS
Eric Weisstein, Table of n, a(n) for n = 1..69
Krishnan Balasubramanian, Topological Indices, Graph Spectra, Entropies, Laplacians, and Matching Polynomials of n-Dimensional Hypercubes, Symmetry (2023) Vol. 15, No. 2, 557.
Per Hakan Lundow, Enumeration of matchings in polygraphs, 1998.
Per Hakan Lundow, GrafPack (Mathematica package). [Broken link]
Eric Weisstein's World of Mathematics, Hypercube Graph
Eric Weisstein's World of Mathematics, Matching Polynomial
EXAMPLE
mu(Q_1) = -1+x^2,
mu(Q_2) = 2-4*x^2+x^4,
mu(Q_3) = 9-44*x^2+42*x^4-12*x^6+x^8,
so the triangle begins:
-1, 1;
2, -4, 1;
9, -44, 42, -12, 1;
CROSSREFS
KEYWORD
sign,tabf,hard
AUTHOR
Eric W. Weisstein, Jul 13 2011
STATUS
approved