A033528 Number of matchings in graph P_{2} X P_{5} X P_{n}.

1, 228, 305184, 334056618, 376940962215, 423657524608288, 476450515130518749, 535774070372040050788, 602492787376187496898304, 677518242019979197787376936, 761886547661136372157201911987, 856760801962209647160995669509984, 963449325363457811035756544808212891

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: A220624 A098246 A091551 * A086002 A061783 A140017

Adjacent sequences: A033525 A033526 A033527 * A033529 A033530 A033531

Keyword

nonn

Author

Per H. Lundow

Status

approved