A033530 Number of matchings in graph P_{3} X P_{3} X P_{n}.

1, 131, 90040, 49793133, 28579431833, 16294017491392, 9303034425177393, 5309783310438438755, 3030852157018381983096, 1729989715204411185894125, 987471788038820650012763705, 563644449821238971691233574464, 321725839534452657823357410831785

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: A200736 A287071 A224843 * A222876 A267720 A263299

Adjacent sequences: A033527 A033528 A033529 * A033531 A033532 A033533

Keyword

nonn

Author

Per H. Lundow

Status

approved