A049507 Number of perfect matchings in graph P_{6} x P_{6} x P_{n}.

1, 6728, 53786626921, 57248060375968384, 123115692449982216049513, 216388579168758145017797108072

Offset

0,2

Links

Table of n, a(n) for n=0..5.

P. H. Lundow, Computation of matching polynomials and the number of 1-factors in polygraphs, Research report #12 (1996).

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

Crossrefs

Cf. A006253, A028452, A028454.

Sequence in context: A145320 A035905 A099778 * A064160 A249463 A031642

Adjacent sequences: A049504 A049505 A049506 * A049508 A049509 A049510

Keyword

nonn,more

Author

Per H. Lundow

Status

approved