A033527 Number of matchings in graph P_{2} X P_{4} X P_{n}.

1, 71, 21497, 5493583, 1441534384, 376940962215, 98618371821449, 25799240154157639, 6749345823947488233, 1765694380951147363456, 461922949276035424430681, 120843562204869252316712655, 31613858308925485200467329841, 8270494656919429771594190182151

Offset

0,2

References

Per Hakan Lundow, "Computation of matching polynomials and the number of 1-factors in polygraphs", Research reports, No 12, 1996, Department of Mathematics, Umea University.

Links

Alois P. Heinz, Table of n, a(n) for n = 0..200

Per Hakan Lundow, Enumeration of matchings in polygraphs, 1998.

Crossrefs

Sequence in context: A251382 A208679 A220980 * A112615 A243665 A243686

Adjacent sequences: A033524 A033525 A033526 * A033528 A033529 A033530

Keyword

nonn

Author

Per H. Lundow

Status

approved