A033513 Number of matchings in graph P_{10} X P_{n}.

1, 89, 78243, 47177097, 30734932553, 19711134149599, 12688781322524383, 8160498611028648795, 5249581929453966097649, 3376771882017849561260401, 2172138783673094193937750015, 1397239543795157686038029989037, 898783117890438425073750503319527

Offset

0,2

Links

Alois P. Heinz, Table of n, a(n) for n = 0..350

Burton S. Kaliski Jr, Targeted Fibonacci Exponentiation, arXiv preprint arXiv:1711.02491 [math.NT], 2017.

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.

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

Crossrefs

Column k=10 of A210662.

Sequence in context: A167398 A023330 A059766 * A128872 A263379 A073905

Adjacent sequences: A033510 A033511 A033512 * A033514 A033515 A033516

Keyword

nonn

Author

Per H. Lundow

Status

approved