A033525 Number of matchings in graph C_{13} X P_{n}.

1, 521, 3909830, 20515048427, 114049219978023, 629054823210684476, 3473775971752370727131, 19179686041473059942755365, 105899042012449225094998682338, 584710646991236367599977270008305, 3228421282256766290943315048262784813

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

Table of n, a(n) for n=0..10.

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

Crossrefs

Row 13 of A287428.

Sequence in context: A015291 A028484 A057699 * A138647 A045050 A305268

Adjacent sequences: A033522 A033523 A033524 * A033526 A033527 A033528

Keyword

nonn

Author

Per H. Lundow

Status

approved