A033524 Number of matchings in graph C_{12} X P_{n}.

1, 322, 1216380, 3302453192, 9457535113025, 26888035021488624, 76527499463086330097, 217774999938555580092160, 619738586975180574673477308, 1763630522748154866449258489490, 5018880864080352254319469089550521, 14282562602209484999805202647488429632

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..11.

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

Crossrefs

Row 12 of A287428.

Sequence in context: A266885 A253368 A334182 * A309030 A337781 A340099

Adjacent sequences: A033521 A033522 A033523 * A033525 A033526 A033527

Keyword

nonn

Author

Per H. Lundow

Status

approved