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A028460
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Number of perfect matchings in graph P_{3} X C_{3} X P_{2n}.
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0
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444, 440693, 471163403, 508635101004, 549900748355911, 594654671638397671, 643075325593489894332, 695442956730066504782459, 752075788532628446524005125, 813320598084518693275523115756
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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REFERENCES
| 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.
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LINKS
| Per Hakan Lundow, Enumeration of matchings in polygraphs, 1998.
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CROSSREFS
| Sequence in context: A128675 A043507 A098255 * A105985 A160583 A025354
Adjacent sequences: A028457 A028458 A028459 * A028461 A028462 A028463
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KEYWORD
| nonn
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AUTHOR
| Per Hakan Lundow (phl(AT)theophys.kth.se)
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