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A028460 Number of perfect matchings in graph P_{3} X C_{3} X P_{2n}. 1

%I #14 Dec 09 2013 19:18:20

%S 1,444,440693,471163403,508635101004,549900748355911,

%T 594654671638397671,643075325593489894332,695442956730066504782459,

%U 752075788532628446524005125,813320598084518693275523115756,879552861931742201382115765976449,951178713466776585241143064515946177

%N Number of perfect matchings in graph P_{3} X C_{3} X P_{2n}.

%D 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.

%H Alois P. Heinz, <a href="/A028460/b028460.txt">Table of n, a(n) for n = 0..300</a>

%H Alois P. Heinz, <a href="/A028460/a028460.txt">G.f. for A028460</a>

%H Per Hakan Lundow, <a href="http://www.theophys.kth.se/~phl/Text/1factors2.ps.gz">Enumeration of matchings in polygraphs</a>, 1998.

%F G.f.: see link above.

%K nonn

%O 0,2

%A _Per H. Lundow_

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Last modified September 21 17:43 EDT 2023. Contains 365503 sequences. (Running on oeis4.)