A028485 Number of perfect matchings in graph C_{14} X P_{n}.

1, 2, 845, 20172, 2289869, 97964230, 7649951296, 405583759128, 27499952912185, 1591141858520618, 101905561228130549, 6113307278736517860, 382470784319563068389, 23290532695631115845632, 1443134633691436850272225, 88425947348303637210263088

Offset

0,2

References

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

Links

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

Alois P. Heinz, G.f. for A028485

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

Formula

G.f.: see link above.

Crossrefs

Sequence in context: A214898 A332182 A230396 * A034227 A324589 A145748

Adjacent sequences: A028482 A028483 A028484 * A028486 A028487 A028488

Keyword

nonn

Author

Per H. Lundow

Status

approved