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A028454
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Number of perfect matchings in graph P_{4} X P_{4} X P_{n}.
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0
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36, 32000, 10885344, 5051532105, 2132137503232, 932814464901633, 403325499406267520, 175220727982196365632, 75996591204223021534740, 32983893365927357595999561, 14312021563707748863632803328
(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: A067584 A146521 A159431 * A159435 A123397 A185097
Adjacent sequences: A028451 A028452 A028453 * A028455 A028456 A028457
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KEYWORD
| nonn
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AUTHOR
| Per Hakan Lundow (phl(AT)theophys.kth.se)
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